ansys, inc. release notes - pharea-software.com · • ansys, inc. installation and licensing...

Release Notes

Release 19.1ANSYS, Inc.April 2018Southpointe

2600 ANSYS Drive ANSYS, Inc. andANSYS Europe,Canonsburg, PA 15317Ltd. are UL

[email protected] registered ISOhttp://www.ansys.com 9001: 2008

companies.(T) 724-746-3304(F) 724-514-9494

Copyright and Trademark Information

© 2018 ANSYS, Inc. Unauthorized use, distribution or duplication is prohibited.

ANSYS, ANSYS Workbench, AUTODYN, CFX, FLUENT and any and all ANSYS, Inc. brand, product, service and featurenames, logos and slogans are registered trademarks or trademarks of ANSYS, Inc. or its subsidiaries located in theUnited States or other countries. ICEM CFD is a trademark used by ANSYS, Inc. under license. CFX is a trademarkof Sony Corporation in Japan. All other brand, product, service and feature names or trademarks are the propertyof their respective owners. FLEXlm and FLEXnet are trademarks of Flexera Software LLC.

Disclaimer Notice

THIS ANSYS SOFTWARE PRODUCT AND PROGRAM DOCUMENTATION INCLUDE TRADE SECRETS AND ARE CONFID-ENTIAL AND PROPRIETARY PRODUCTS OF ANSYS, INC., ITS SUBSIDIARIES, OR LICENSORS. The software productsand documentation are furnished by ANSYS, Inc., its subsidiaries, or affiliates under a software license agreementthat contains provisions concerning non-disclosure, copying, length and nature of use, compliance with exportinglaws, warranties, disclaimers, limitations of liability, and remedies, and other provisions. The software productsand documentation may be used, disclosed, transferred, or copied only in accordance with the terms and conditionsof that software license agreement.

ANSYS, Inc. and ANSYS Europe, Ltd. are UL registered ISO 9001: 2008 companies.

U.S. Government Rights

For U.S. Government users, except as specifically granted by the ANSYS, Inc. software license agreement, the use,duplication, or disclosure by the United States Government is subject to restrictions stated in the ANSYS, Inc.software license agreement and FAR 12.212 (for non-DOD licenses).

Third-Party Software

See the legal information in the product help files for the complete Legal Notice for ANSYS proprietary softwareand third-party software. If you are unable to access the Legal Notice, contact ANSYS, Inc.

Published in the U.S.A.

Table of Contents

Global ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii1. Advisories .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii2. Compatibility with Previous Releases .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii3. Installation .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix4. Licensing .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix5. Documentation .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix6. Verification Manual ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix

6.1. Mechanical APDL Verification Manual ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x6.1.1. Modified Verification Test Cases .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x6.1.2. Removed Verification Test Cases .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x

6.2. Workbench Verification Manual ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x6.2.1. New Verification Test Cases .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x

7. Online Video Access .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x8. ANSYS Customer Site .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x

I. ANSYS Structural Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11. Mechanical Application Release Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.1. Changes in Product Behavior ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31.2. General ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41.3. Graphics .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51.4. Geometry .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51.5. Materials ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51.6. Model Assembly .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61.7. External Model ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61.8. Model Transfer ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61.9. Contact and Connections .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61.10. Mesh .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.11. Fracture .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.12. Additive Manufacturing Process Simulation .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.13. Acoustics Analysis ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.14. Topology Optimization .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81.15. System Coupling .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81.16. Loads/Supports/Conditions .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81.17. Solution .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91.18. Fatigue .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91.19. Rigid Body Solver ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91.20. Explicit Dynamics .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101.21. Results ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2. Mechanical APDL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112.1. Structural ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.1.1. Contact ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112.1.2. Elements and Nonlinear Technology .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112.1.3. Linear Dynamics .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.2. Solvers ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122.2.1. Distributed ANSYS Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122.2.2. GPU Acceleration Enhancements ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122.2.3. Other Solver Changes and Enhancements ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.3. Commands .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132.3.1. New Commands .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132.3.2. Modified Commands .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132.3.3. Undocumented Commands .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

iiiRelease 19.1 - © ANSYS, Inc. All rights reserved. - Contains proprietary and confidential information

of ANSYS, Inc. and its subsidiaries and affiliates.

2.4. Elements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162.4.1. Undocumented Elements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.5. Documentation .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172.5.1. Technology Demonstration Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172.5.2. Documentation Updates for Programmers .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172.5.3. Feature Archive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.6. Known Incompatibilities ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182.6.1. Contact Stabilization Damping .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3. Autodyn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193.1. New Features and Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4. Aqwa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214.1. Aqwa Solver Modules .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214.2. Aqwa Graphical Supervisor (AGS) .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214.3. Hydrodynamic Analysis Systems .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5. ANSYS Composite PrepPost (ACP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235.1. New Features in ANSYS Composite PrepPost (ACP) 19.1 .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

5.1.1. HDF5 Composite CAE Interface .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235.1.2. Improved Import/Conversion of Legacy Models ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235.1.3. Ply-wise Field Definitions for Variable Materials ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235.1.4. ACP Linux is Launched without Start Script ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

5.2. Supported Platforms for ANSYS Composite PrepPost (ACP) 19.1 .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235.3. Known Limitations and Incompatibilities ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5.3.1. OpenGL Drivers on Linux .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24II. ANSYS Fluids Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

1. Fluent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271.1. Supported Platforms for ANSYS Fluent 19.1 .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271.2. New Features in ANSYS Fluent 19.1 .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271.3. Updates Affecting ANSYS Fluent 19.1 Code Behavior ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

1.3.1. Meshing Mode .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281.3.2. Solution Mode .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

2. CFX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312.1. Supported Platforms .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312.2. New Features and Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312.3. Incompatibilities ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3. TurboGrid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333.1. Supported Platforms .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333.2. New Features and Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333.3. Incompatibilities ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

4. BladeModeler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354.1. Supported Platforms .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354.2. BladeGen .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

4.2.1. New Features and Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354.3. BladeEditor ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

4.3.1. New Features and Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355. CFD-Post . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

5.1. Supported Platforms .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 375.2. New Features and Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 375.3. Incompatibilities ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

6. Polyflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 396.1. New Features .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 396.2. Supported Platforms .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

7. Forte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Release 19.1 - © ANSYS, Inc. All rights reserved. - Contains proprietary and confidential informationof ANSYS, Inc. and its subsidiaries and affiliates.iv

ANSYS, Inc. Release Notes

7.1. New Features and Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 417.2. Resolved Issues and Limitations .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

8. Chemkin-Pro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 438.1. New Features and Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 438.2. Resolved Issues and Limitations .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

9. FENSAP-ICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 459.1. New Features and Enhancements in ANSYS FENSAP-ICE .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 459.2. Resolved Issues and Limitations in ANSYS FENSAP-ICE .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 459.3. Beta Features .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

III. ANSYS Electronics Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 471. Icepak . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

1.1. Introduction .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 491.2. New and Modified Features in ANSYS Icepak 19.1 .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 491.3. Resolved Issues and Limitations in ANSYS Icepak 19.1 .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

IV. ANSYS Geometry & Mesh Prep Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 511. DesignModeler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 532. CAD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 553. Meshing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

3.1. Changes in Product Behavior from Previous Releases .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 573.2. Resuming Databases from Previous Releases .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 573.3. Sizing Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 573.4. Gasket Meshing .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 583.5. Robustness Improvements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

4. IC Engine Release Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 595. ICEM CFD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

5.1. Multizone Block Editing improvements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61V. ANSYS Simulation Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

1. Workbench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 651.1. ANSYS Workbench .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

1.1.1. General Workbench Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 651.1.2. Design Point Update Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 651.1.3. ANSYS Workbench-System Coupling Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 651.1.4. Mechanical APDL Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 651.1.5. ANSYS Workbench-Remote Solve Manager Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

1.2. External Connection Add-In .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 661.3. ANSYS Workbench and EKM ..... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 661.4. Engineering Data Workspace .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 661.5. External Data .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 661.6. External Model ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 671.7. Enhancement to Mechanical Model Cells ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 671.8. FE Modeler ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 671.9.TurboSystem Release Notes .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

1.9.1. Supported Platforms .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 671.9.2. New Features and Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

2. System Coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 693. ACT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 714. Remote Solve Manager (RSM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

4.1. New Features and Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 734.2. Issues Resolved in this Release .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 734.3. Known Issues and Limitations .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 734.4. Deprecated Features .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

5. DesignXplorer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

vRelease 19.1 - © ANSYS, Inc. All rights reserved. - Contains proprietary and confidential information



6. ANSYS Viewer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 776.1. New Features and Enhancements .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 776.2. Resolved Issues and Limitations .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 776.3. Known Issues and Limitations .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

VI. ANSYS Discovery SpaceClaim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 791. Enhancements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

VII. ANSYS Discovery Live . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 831. Enhancements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

VIII. ANSYS Discovery AIM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 871. Advisories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 892. Enhancements in ANSYS Discovery AIM Release 19.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

2.1. Structures .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 912.2. Magnetics ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 912.3. Fluids .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 912.4. General ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

3. Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Release 19.1 - © ANSYS, Inc. All rights reserved. - Contains proprietary and confidential informationof ANSYS, Inc. and its subsidiaries and affiliates.vi


Global Release NotesThe release notes are specific to ANSYS, Inc. Release 19.1 and arranged by application/product, withthe exception of:

• Advisories (p. viii)

• Compatibility with Previous Releases (p. viii)

• Installation (p. ix)

• Licensing (p. ix)

• Documentation (p. ix)

• Verification Manual (p. ix)

• Online Video Access (p. x)

• ANSYS Customer Site (p. x)

Note that installation- and licensing-specific information is detailed in some application and productsections.

Release notes in printable format (PDF) for the this release are provided on the product media. Theycan also be downloaded here. Release notes are also accessible in the product Help (either online orinstallable, as applicable).

Release notes for previous releases are available in PDF format and, since ANSYS 18.0, online, by clickingthe appropriate links below:

• ANSYS 19.0 (PDF) (online)




• ANSYS 17.2 (PDF)






To download zip files containing the Product and Release Documentation for previous releases, seeANSYS customer site> Downloads> Previous Releases> ANSYS Documentation and Input Files. The ReleaseDocumentation files include the following:

viiRelease 19.1 - © ANSYS, Inc. All rights reserved. - Contains proprietary and confidential information


http://storage.ansys.com/doclinks/ansys.html?code=RN-190-pdf-ALU-K1a

http://storage.ansys.com/doclinks/ansys.html?code=RN-182-pdf-ALU-J2a

http://storage.ansys.com/doclinks/ansys.html?code=RN-182-onl-ALU-J2a







http://storage.ansys.com/doclinks/ansys.html?code=RN-172-pdf-ALU-H2a



http://storage.ansys.com/doclinks/ansys.html?code=RN-162-pdf-ALU-G2a



http://storage.ansys.com/doclinks/ansys.html?code=CustomerSite-ALU-K1a

• ANSYS Platform Support Strategy & Plans

• ANSYS, Inc. Installation and Licensing Tutorials

• ANSYS, Inc. Known Issues and Limitations

• ANSYS, Inc. Licensing Guide

• ANSYS Quick Start Installation Guide

• ANSYS Quick Start Licensing Guide

• ANSYS, Inc. Release Notes

• Linux Installation Guide

• SpaceClaim Release Notes (as applicable)

• Windows Installation Guide

1. Advisories

In addition to the incompatibilities noted within the release notes, known non-operational behavior,errors and/or limitations at the time of release are documented in the Known Issues and Limitationsdocument, although not accessible via the ANSYS Help Viewer. See the ANSYS customer site (p. x) oronline Help for information about the ANSYS service packs and any additional items not included inthe Known Issues and Limitations document. First-time users of the customer site must register tocreate a password.

For a list of issues and limitations in previous releases that have been resolved in Release 19.1, refer tothe Resolved Issues and Limitations document on the ANSYS Help site.

For the most recent version of the current release's Release Notes document, see the ANSYS, Inc. ReleaseNotes section of the ANSYS Help internet documentation website or download it here.

Project names and paths should not include Japanese or Chinese characters. The restriction is applicableto most ANSYS, Inc. products, including the flagship products and Workbench add-ins. The restrictionapplies whether the user interface is localized or not.

Support for GAMBIT Reader is discontinued with the release of ANSYS 20.

EKM has been deprecated in the 19.1 release. For more information or support, contact your local ANSYSaccount manager or established support representatives.

2. Compatibility with Previous Releases

Backwards Compatibility: ANSYS 19.1 was tested to read and resume databases from the followingprevious versions: 19.0 and 18.x. Note that some products are able to read and resume databases fromreleases prior to 18.0. See the specific product sections below for more information. For those productsthat cannot directly read a 17.x database in 19.1, first resume it in 18.x and then resume that databasein 19.1.

Upward/Forward Compatibility: No previous release has the ability to read and resume a databasefrom a more recent release.

Release 19.1 - © ANSYS, Inc. All rights reserved. - Contains proprietary and confidential informationof ANSYS, Inc. and its subsidiaries and affiliates.viii

Global

http://storage.ansys.com/doclinks/ansys.html?code=KIL-ALU-K1a

3. Installation

The following features are new or changed at Release 19.1. Review these items carefully.

• The Install EKM Server option has been removed from the ANSYS 19.1 installation. EKM has been de-precated in the 19.1 release.

• When installing any ANSYS Discovery AIM product, the Intel OpenCL runtimes must be installed. At theconclusion of the ANSYS Discovery AIM product installation, the following option may be displayed:"Install Intel OpenCL runtimes needed for Discover AIM".

4. Licensing

The following enhancements were made to ANSYS, Inc. Licensing for Release 19.1:

• ANSYS AUTODYN-3D now enables you to use four cores without using any HPC licenses. These fourbuilt-in HPC licenses are additive to ANSYS HPC and ANSYS HPC Pack.

• The current version of Java utilized by the ANSYS License Management Center is 1.8.0_162.

• The current version of OpenSSL utilized with the ANSYS Licensing Interconnect is 1.1.0g.

• This release includes License Manager privacy controls to comply with data privacy requirements. En-abling "privacy mode" hides personally identifiable information (username and hostname). For moreinformation, see the "Enabling License Manager Privacy Controls" section of the ANSYS Enterprise Li-censing Guide.

5. Documentation

ANSYS Help

Our product documentation is now online, directly linked from the products. With online documentation,you have access to the best and latest content, updated as soon as it is available. You also gain accessto our help, tutorials, and videos in a single, convenient location, accessible from all your Internet-con-nected devices.

If you do not have Internet access, or if you would like a local copy of the documentation on your system,you can download an installable version of our product documentation from the ANSYS DownloadCenter.

Your feedback is greatly appreciated as we continue to improve this new resource.

6. Verification Manual

Significant modifications and additions occurred in the Verification Manuals at 19.1. These changesprovide greater coverage and accuracy in the verification of the ANSYS product suite.

The Verification Manuals for the following products were updated at 19.1:6.1. Mechanical APDL Verification Manual6.2.Workbench Verification Manual

ixRelease 19.1 - © ANSYS, Inc. All rights reserved. - Contains proprietary and confidential information


Verification Manual

http://storage.ansys.com/doclinks/ansys.html?code=AnsysDownloads-ALU-K1a

http://storage.ansys.com/doclinks/ansys.html?code=AnsysDownloads-ALU-K1a

6.1. Mechanical APDL Verification Manual

The following sections outline the changes to the Mechanical APDL Verification Manual:6.1.1. Modified Verification Test Cases6.1.2. Removed Verification Test Cases

6.1.1. Modified Verification Test Cases

The following verification test cases have been updated:

• VM15 – Bending of a Circular Plate Using Axisymmetric Elements. This problem has been updated to useonly nodes and elements.

• VM17 – Snap-Through Buckling of a Hinged Shell. SHELL63, an archived legacy element, has been removedfrom verification.

6.1.2. Removed Verification Test Cases

All verification test cases related to ANSYS LS-DYNA have been removed as this feature is now undocu-mented.

6.2. Workbench Verification Manual

The following section outlines the changes to the Workbench Verification Manual:6.2.1. New Verification Test Cases

6.2.1. New Verification Test Cases

The following new verification test case is available:

• VMSC_Repair002 – Straighten, Simplify, Small Faces, and Merge Faces Features. (This problem replacesMerge Faces, Small Faces, Simplify, Straighten in prior releases.)

7. Online Video Access

To review an extensive library of How-To Videos that detail how to use ANSYS product features, go tothe ANSYS How-To Videos page at YouTube. Note that you can now also access the How-To videosfrom the ANSYS Help home page for your product.

8. ANSYS Customer Site

If you have a password to the ANSYS customer site (www.ansys.com/customercommunity), you canview additional documentation information and late changes. The customer site is also your source forANSYS, Inc. software downloads, service packs, product information (including example applications,current and archived documentation, undocumented commands, input files, and product previews),and online support.

All the product documentation is available in printable format (PDF). Note that the content of the filescan be copied into word processing programs.

ANSYS customer site access points:

Release 19.1 - © ANSYS, Inc. All rights reserved. - Contains proprietary and confidential informationof ANSYS, Inc. and its subsidiaries and affiliates.x

Global

http://storage.ansys.com/doclinks/videos.html?code=ANSYSHowToVideos-VLU-K1a



• Tutorials and input files To access tutorials and their input files, go to the tutorials area of the cus-tomer site.

• Documentation To access documentation files, go to the documentation area of the customer site.

• General information For general information about materials and services available to our customers,go to the main page of the customer site.

xiRelease 19.1 - © ANSYS, Inc. All rights reserved. - Contains proprietary and confidential information


ANSYS Customer Site

http://storage.ansys.com/doclinks/ansys.html?code=TSite-ALU-K1a

http://storage.ansys.com/doclinks/ansys.html?code=DSite-ALU-K1a


Part I: ANSYS Structural Products

Release notes are available for the following ANSYS Structural products:

Mechanical Application (p. 3)Mechanical APDL (p. 11)Autodyn (p. 19)Aqwa (p. 21)ACP (p. 23)

Chapter 1: Mechanical Application Release Notes

This release of the Mechanical application contains all of the capabilities from previous releases plusmany new features and enhancements. Areas where you will find changes and new capabilities includethe following:

1.1. Changes in Product Behavior1.2. General1.3. Graphics1.4. Geometry1.5. Materials1.6. Model Assembly1.7. External Model1.8. Model Transfer1.9. Contact and Connections1.10. Mesh1.11. Fracture1.12. Additive Manufacturing Process Simulation1.13. Acoustics Analysis1.14.Topology Optimization1.15. System Coupling1.16. Loads/Supports/Conditions1.17. Solution1.18. Fatigue1.19. Rigid Body Solver1.20. Explicit Dynamics1.21. Results

Backwards Compatibility: ANSYS products strive to enable the reading and resuming of databasesfrom previous releases. We currently test this capability for the previous two releases and any includedpoint releases. This means that release 19.1 was tested and verified to be backwards compatible withrelease 17.0, 18.0, and 19.0 as well as any associated point releases (17.x, 18.x). Although not verifiedfor even earlier releases, ANSYS Mechanical should also allow resuming databases from them.

1.1. Changes in Product Behavior

Release 19.1 includes several new features and enhancements that result in product behaviors thatdiffer from previous releases. These behavior changes are presented below.

• Topology Optimization Analysis. The following changes have been implemented for Topology Op-timization Analyses:

– Solution Methodology for Stress Constraints. In previous releases, the stress values that werecalculated by the optimization solver during the topology optimization analysis were under estimatedcompared to the result that you obtain from a validation of the optimized geometry. In order to moreaccurately calculate these stress constraints, the optimization solver now applies the p-Norm correctionon the stress values extracted from the results file.

3Release 19.1 - © ANSYS, Inc. All rights reserved. - Contains proprietary and confidential information


– Analysis Settings - Analysis Data Management. The default value of the Max Num Of IntermediateFiles property is now equal to the value specified by the Maximum Number Of Iterations propertyof the Definition Category of the Analysis Settings. In the prior release, the value was set to 3.

In addition, you can change the default setting for the Max Num Of Intermediate Filesproperty under the Analysis Data Management (Topology Optimization) category of theOptions > Analysis Settings and Solution preference.

– Manufacturing Constraint. If you specify your Manufacturing Constraint using the Pull Out Directionoption, the application’s new stabilization techniques may cause your results to be different comparedto those obtained before this change.

– Response Constraint. For the current release, the Global von-Mises Stress Constraint and Localvon-Mises Stress Constraint options are not supported under the DesignSpace or ANSYS Mechan-ical Pro license.

• Material Assignment for Geometry Update. When you first import your geometry into Mechanical,any bodies that do not have a material assigned to it are assigned the application's default material. Ifyou subsequently update your geometry from the source application, Mechanical no longer assignsthe default material to new bodies. If the geometry update includes a new body without an assignedmaterial, the body becomes underdefined and requires you to specify a material. Previously, Mechan-ical automatically assigned the default material to new bodies following an update.

A new property on the Geometry object, Assign Default Material, enables you to control thedefault material assignment behavior for geometry updates. To revert to the old behavior setthis property to Yes.

• Materials (Group) Object. The following features are now accessed through the new Materials object.Previously, they were accessed via the Geometry object.

– Material Plot

– Imported Material Fields

1.2. General

The following general enhancements were made at Release 19.1:

• Group Tree Objects. Mechanical provides new options enabling you to Cut, Copy, and then pastegrouped objects. In addition, you can also Duplicate a group. These capabilities include all child objects,child groups, etc. contained in the group. Furthermore, you can cut/copy and paste a group from oneenvironment into another environment.

• Write System Coupling Files. When your Mechanical analysis includes one or more Fluid Solid Interfaceboundary conditions, the Environment object provides a new option, Write System Coupling Files.This option creates an input (.dat) file as well as a system coupling (.scp) file for you to use whenyou are running a System Coupling analysis using the System Coupling console.

• Filtering the Tree. The filtering feature has a new filter type: Scoping. This option displays All treeobjects or objects that have partial scoping. Filtering for objects that are partially scoped enables youto pinpoint tree objects that need your attention because some portion of their scoping was lost dueto upstream geometry updates.

Release 19.1 - © ANSYS, Inc. All rights reserved. - Contains proprietary and confidential informationof ANSYS, Inc. and its subsidiaries and affiliates.4

Mechanical Application Release Notes

1.3. Graphics

The following graphics enhancements were made at Release 19.1:

• Hiding Bodies by Type. There is a new context-menu option Hide (or Show) bodies that allows youto quickly hide (or show) bodies based on their type: Solid Bodies, Surface Bodies, or Line Bodies.This option is available in the Geometry window as well as on the Body, Geometry, and Part objectswhen more than one body type exists.

1.4. Geometry

The following geometry enhancements were made at Release 19.1:

• Switching Between 2D and 3D Analysis Types. Using the Analysis Type property available in theproperties of the Workbench Project Schematic for the Geometry cell, you can now switch between2D and 3D analysis types even after you first attach the geometry. In previous releases, the AnalysisType property could not be changed once you attach a geometry.

• Geometry Update. The Geometry object has a new category and property: Update Options and AssignDefault Material. This property controls default material assignment behavior when geometry is updatedin Mechanical. When you first import your geometry into Mechanical, any bodies that do not have amaterial assigned to it are assigned the application's default material. If you subsequently update yourgeometry from the source application, and this property is set to No (default), Mechanical does notassign the default material to new bodies. If the geometry update includes a new body without an as-signed material, the body becomes underdefined and requires you to specify a material.

• Line Body Definition. Now, when you are defining a line body, you can specify the Model Typeproperty as Link. This options specifies the element type as LINK180. This option is a suitable optionwhen analyzing uniaxial tension-compression scenarios.

• Importing STL files: You can now import STereoLithography (.stl) files into the Mechanical applicationvia the Geometry cell of your analysis system on the Workbench Project page. STL files are very com-monly used in 3D printing applications. For this file type, the mesh can only be generated using CartesianMesh Method. And, it is recommended that you use Element Face scoping for connections, loads and,results.

1.5. Materials

The following material enhancements were made at Release 19.1:

• Materials (Group) Object. Mechanical now provides a Materials object. This object contains all of thematerials (in object form) available for your analysis. It is also used to insert and specify the followingfeatures:

– Material Assignment (see below)

– Material Plot

– Imported Material Fields

• Material Assignment. The new Material Assignment object enables you to assign materials to bodiesand while doing so, share the same material ID across bodies in the solver input file.



Materials

1.6. Model Assembly

For Release 19.1, only the following Model Assembly enhancements were made:

• Transformation Type. A new Transformation Type option is available: Mirroring. This option enablesyou to import a mirror copy of your mesh-based upstream model, about a specified plane, from anupstream Model Assembly system.

1.7. External Model

For Release 19.1, the following External Model enhancements were made:

• The External Model system now supports the capability to transfer the following data/objects:

– Surface Load Boundary Conditions

– Spring Bushing for NASTRAN files

• Transformation Type. A new Transformation Type option is available: Mirroring. This option enablesyou to import a mirror copy of your mesh-based upstream model, about a specified plane, from anupstream External Model system.

• Importing Nastran Finite Element Data. ANSYS Workbench and ANSYS Mechanical now enable youto attach additional files to an imported parent .bdf,.dat, or .nas file. These support files can includeadditional node and element data.

• Supported Element Types. The External Model system now enables you to import link elements intoMechanical from Mechanical APDL common database, ABAQUS Input, and Nastran Bulk Data files.

• Import Summary. For the Import Summary object, for Table 1, when your model includes over 50data items, only the first 50 are displayed. The table then provides navigational options you can use topresent the data items as desired. And, if your model contains a large number of bodies, you can nowscroll through the data items in Table 2.

1.8. Model Transfer

The following model transfer enhancements were made at Release 19.1:

• Transferring System Data from AIM. You can now transfer joints from the AIM application to theMechanical application.

1.9. Contact and Connections

The following contact and connection enhancements were made at Release 19.1:

• Beam-Beam Contact. The Scope category of the Contact Region object has a new property: Beam-Beam Detection. This property enables you to specify the maximum number of target segments inter-acting with each contact detection point simultaneously. In addition, the Internal Pipe Contact optionof this property enables you to model a beam (or pipe) sliding along the inside of another hollow beam(or pipe).

• Contact Result Tracker. The Contact Result Tracker now enables you to specify the following outputtypes:



Total Force (X/Y/Z) from Contact Pressure–

– Total Force (X/Y/Z) from Tangential Stress

– Sliding Indication

1.10. Mesh

Refer to the 19.1 Release Notes of the Meshing (p. 57) application for new features and enhancementsassociated with Meshing in the Mechanical application.

The following mesh enhancements have been made at Release 19.1:

• Sizing Options. The Sizing Options have been simplified to align more closely with best practices. Certainolder options and behaviors that are no longer useful or are no longer best practices as a result of more recentimprovements to the Meshing application have been eliminated (deprecated). Refer to the 19.1 ReleaseNotes of the Meshing (p. 57) application for details.

• Gasket Meshing. A Gasket Mesh Control can be defined in the Mesh folder when the Stiffness Behavior isset to Flexible. The gasket mesh control in the mesh folder can be applied to multiple bodies, so if thereare many gasket bodies this option may be a more convenient approach to setting up the gaskets.

1.11. Fracture

The following fracture enhancements have been made at Release 19.1:

• Smart Crack Growth. The Smart Crack Growth object has a new property: Stop At Max Crack Exten-sion. Using this property, you can specify the maximum distance for crack propagation. Once themaximum crack extension limit is reached, the application stops the solution process. In this instance,the solution is incomplete and the Solution folder will not be in solved state because the solution isnot complete for all time points. If the maximum crack extension limit is not reached during solution,then the solution process completes normally.

1.12. Additive Manufacturing Process Simulation

Additive Manufacturing Process Simulation. At Release 19.1, the new AM Process feature, used incombination with a Transient Thermal analysis linked to a Static Structural analysis, enables you tosimulate an additive manufacturing process. The AM Process feature, as well as its supporting objectsand options, simulates a thermal history of a structural layer-by-layer process that incorporates buildand base plate definition, user-specified or application generated support options, as well as supportremoval steps.

To further facilitate the use of this new feature, Workbench offers an option for a process wizard (viathe Table-Based Extension Manager) to guide you through the steps of setting up an additive manu-facturing simulation.

1.13. Acoustics Analysis

For Release 19.1, the following Acoustics analysis enhancements were made:

• Static Acoustics Analysis. Workbench Mechanical now offers a new analysis type: Static Acoustics.You use a Static Acoustics analysis to apply stresses to a downstream Modal Acoustics analysis. Thecombination creates a Fluid-Structure Interaction (FSI) analysis.



Acoustics Analysis

• Diffuse Sound Field Transmission Loss. This is a new result type for Harmonic Acoustics analyses. Itis used in combination with the Diffuse Sound Field excitation condition. It enables you to predict thetransmission loss of the structural panel specified by the excitation.

• Acoustic Far-field Microphone Results. Microphone Results now enable you to specify as many asnine microphone locations using the new Worksheet Definition Method option.

• Equivalent Radiated Power and Equivalent Radiated Power Level Results. Two new result optionsare available for 3D Harmonic Acoustics (requires Structural Physics Region) analyses. These resultsenable you to estimate the radiated structure-borne sound power from a vibrating structural surface.

• Default Materials. Air and Water Liquid are now default materials for Acoustic analyses. They are listedin the new Materials object in the tree Outline.

1.14. Topology Optimization

The following Topology Optimization analysis enhancements were made at Release 19.1:

• Topology Optimization Results. Result histories are now available for the Topology Density and To-pology Element Density results. This means they can now be evaluated for specific iterations or animatedover the solution. The Iteration property enables you to specify an iteration number.

• Manufacturing Constraint. The Manufacturing Constraint condition now provides a Scope categoryof properties in the Details view for the Pull Out Direction, Cyclic, and Symmetry options of theSubtypes property. The scoping options enable you to scope these constraints to bodies and meshelements, either geometry-based or Named Selections.

• Response Constraint. The Response Constraint condition now provides a Scope category of propertiesin the Details view. This category enables you to scope the Local von-Mises Stress Constraint toedges, faces, bodies, and mesh elements. In addition, you can scope the Displacement and ReactionForce constraints to vertices, edges, faces, bodies, and mesh nodes. For element and node scoping,you can specify one or more elements or nodes.

• Solution Scalability. Topology optimization solution scalability has been improved when your TopologyOptimization analysis is linked to a single upstream Modal analysis. For standard topology optimizationmodels, performance improvement of as much as 10 percent has been observed with the optimizationrun using higher core counts, such as 20 cores.

• Solution Methodology. The solver now uses the elemental mean value of the equivalent (von-Mises)stress when a stress constraint is added. These values are extracted from the result file. When restrictingthe maximum stress value of a set of elements, a new technique is applied that approximates themaximum more accurately. The normalized maximum approximation uses an adaptive scaling factorfor the p-Norm.

1.15. System Coupling

System Coupling. At Release 19.1, Mechanical can now participate in command-line coupled multiphysicssimulations run entirely from the command-line using the System Coupling Service v2.0, a second-generation coupling engine that provides enhanced control of coupled analyses.

1.16. Loads/Supports/Conditions

The following loads/supports/conditions enhancements were made at Release 19.1:



• Temperature. You can now scope a Temperature boundary condition to nodes, element faces, andelements.

• Thermal Loading Conditions. The following thermal boundary conditions now support element facescoping:

– Convection

– Radiation

– Heat Flux

• Using Imported Loads for One-Way FSI.

– If the Interpolation type property on the Imported Loads (Group) is specified as Mechanical-BasedMapping, then you can use the Ctrl key to select multiple options from the CFD Surface or the CFDDomain properties drop-down menus when defining your Transfer Definitions.

– A new property is available when importing loads from a CFD analysis. The new property, SourceTime, enables you to select which time steps are imported from your upstream CFD analysis anddisplayed in the Data View table. From the CFD analysis, you can easily import data for specific times,all times, or for a time range.

– Based on your Data View table content, a new context menu (right-click) option is available: SyncAnalysis Times. This option synchronizes the values of the Data View table with the Step Controlsof the Analysis Settings object.

1.17. Solution

The following solution enhancements were made at Release 19.1:

• Solution Statistics. The Solution Output property of the Solution Information object has a new option:Solution Statistics. This option presents a quick summary of the solution process in the Worksheet.The summary includes solution and HPC metrics as well as recommendations to improve the solutiontime and performance.

1.18. Fatigue

The following fatigue enhancements were made at Release 19.1:

• Fatigue Results. Fatigue results, that is, the Fatigue Tool, now supports temperature dependent S-NCurves. The Engineering Data workspace material properties Alternating Stress Mean Stress and Al-ternating Stress R-Ratio are no longer available properties in the Life category. These properties havebeen replaced by the property S-N Curve, along with the new Mean Stress and R-Ratio Field Variablesas well as Temperature. These properties enable you to create your desired fatigue material propertiesfor Static Structural and Transient Structural analyses.

1.19. Rigid Body Solver

The following Rigid Body Solver enhancements were made at Release 19.1:

• The Rigid Dynamics solver now supports Model state dependent loads through the use of the Variable LoadACT extension. Joint loads and remote forces can be dependent on the Model state, and can be appliedconditionally. The extension is only available on Windows platforms.



Rigid Body Solver

1.20. Explicit Dynamics

The Explicit Dynamics analysis system is a Workbench integrated provision of the Autodyn FE (Lagrange)and multiple-material Euler solvers, and Euler-Lagrange Coupling (providing FSI).

The following Explicit Dynamics Solver enhancements have been made at Release 19.1:

• The Explicit Dynamics solver now has the ability to use load steps during the solution. Boundary condi-tions and loads can be activated and deactivated per load step.

• The Explicit Dynamics solver supports Result Plot Trackers during the solve (see the Results (p. 10) entryin these release notes).

The following LS-DYNA Solver enhancements have been made at Release 19.1:

• The Workbench LS-DYNA extension supports the import of Pressure loads using External Data.

1.21. Results

The following result enhancements were made at Release 19.1:

• Equivalent Radiated Power and Equivalent Radiated Power Level Results. Two new result optionsare available for 3D Harmonic Response and Harmonic Acoustics (requires Structural Physics Region)analyses. These results enable you to estimate the radiated structure-borne sound power from a vibratingstructural surface.

• Contact Result Tracker. The Contact Result Tracker now enables you to specify the following outputtypes:

– Total Force (X/Y/Z) from Contact Pressure

– Total Force (X/Y/Z) from Tangential Stress

– Sliding Indication

• On Demand Stress/Strain (Windows Platform Only). The use of the On Demand Stress/Strain property,of the Solution object, does not require an upstream ACP system.

• Result Plot Tracker. The Solution Information object provides Result Plot Tracker options that enableyou to view result contours in real time as the solution progresses. Furthermore, you can add ResultPlot Trackers at any point during the solution process. In the previous release, this feature was onlyavailable for Topology Optimization analyses. Now, this feature has been expanded to include StaticStructural, Transient Structural, Steady-State Thermal, Transient Thermal, and Explicit Dynamics analyses.New result options include Deformation, Stress, Strain, and Temperature.

• Linearized Stress Results. The Linearized Stress results have a new property: Zero Through-ThicknessBending Stress. This property is only available for 3D analyses. When activated, the application ignoresthe calculations for out-of-plane bending stresses.

• Animation. In addition to the .AVI file format, you can now export animations as either .MP4 files or.WMV files.



Chapter 2: Mechanical APDL Release Notes

Release 19.1 of the Mechanical APDL application offers most of the capabilities from prior releases. Newfeatures, enhancements, and changes appear in the following areas:

• Structural (p. 11)

• Solvers (p. 12)

• Commands (p. 13)

• Elements (p. 16)

• Documentation (p. 17)

• Known Incompatibilities (p. 18)

Also see ANSYS Customer Site (p. x) for important information about this release that may have recentlybecome available.

Backward Compatibility: Mechanical APDL Release 19.1 can read database files from all prior Mechan-ical APDL releases. Due to ongoing product improvements and defect corrections, however, resultsobtained from old databases running in new releases may differ somewhat from those obtained previ-ously.

2.1. Structural

Release 19.1 includes the new features and enhancements for the following structural analysis disciplines:2.1.1. Contact2.1.2. Elements and Nonlinear Technology2.1.3. Linear Dynamics

2.1.1. Contact

Release 19.1 includes the following enhancement for structural analyses involving contact:

• The method to define contact stabilization damping has been simplified. In this release, both normal andtangential contact stabilization damping are applied as long as KEYOPT(15) of the contact element is set to2 or 3. The normal contact damping scaling factor, real constant FDMN, defaults to 1.0, and the tangential

contact damping scaling factor, real constant FDMT, defaults to 1x10-3. To overwrite the default for FDMNor FDMT, specify the real constant as a positive value to define a scaling factor or a negative value to definean absolute damping coefficients.

2.1.2. Elements and Nonlinear Technology

Release 19.1 includes the following enhancement to nonlinear technology used in structural analyses:



• For mesh nonlinear adaptivity, an option to enable or disable coordinate truncation of nodal positionsduring remeshing is now available to help improve solution repeatability, especially for SMP and DMP ANSYSrunning with different cores. For more information, see NLMESH,TCOR and Mesh Nonlinear Adaptivity Re-quirements and Limitations in the Advanced Analysis Guide.

2.1.3. Linear Dynamics

Release 19.1 includes the following enhancement for structural analyses involving linear dynamics:

• Energy values printed via the PRENERGY command can now be retrieved via *GET with Entity = PRENERGY.

2.2. Solvers

Release 19.1 includes the following improvements to the solution process:2.2.1. Distributed ANSYS Enhancements2.2.2. GPU Acceleration Enhancements2.2.3. Other Solver Changes and Enhancements

2.2.1. Distributed ANSYS Enhancements

The following enhancement is available for distributed-memory parallel processing (Distributed ANSYS):

• This release includes improved scaling performance, particularly for models involving many linear loadsteps.

2.2.2. GPU Acceleration Enhancements

The following enhancements are available for the GPU Accelerator capability:

• The NVIDIA GPU driver requirements have been updated. Refer to your ANSYS, Inc. Installation Guidefor platform-specific driver versions.

• The NVIDIA CUDA libraries have been updated to version 9.0, which brings better support and perform-ance for the recent Volta-generation of GPU cards from NVIDIA.

• Support has been added for the NVIDIA Quadro GV100 GPU card.

• The prerequisite check at startup for a recommended GPU card can now be bypassed via the ANS-GPU_OVERRIDE environment variable.

• Several enhancements have been made to the GPU Accelerator feature logic in the sparse solver toimprove both performance and robustness.

2.2.3. Other Solver Changes and Enhancements

• The compilers have been updated to the Intel 2017 Update 4 compiler version. In addition, the use of MicrosoftVisual Studio 2015 (on Windows), and GCC 6.3 (on Linux) is also required.

• A new configuration option (/CONFIG,GRW_NBUF) has been added to allow the number of file buffers togrow dynamically, thereby reducing the amount of file I/O performed to the physical hard disks.


Mechanical APDL

2.3. Commands

This section describes changes to commands at Release 19.1:2.3.1. New Commands2.3.2. Modified Commands2.3.3. Undocumented Commands

Some commands are inaccessible from menus and are available via the command input area or batchfile input only. The documentation for each command indicates menu path information, if available.

2.3.1. New Commands

The following new commands are available:

• AMBEAM – For multiple-beam printers, specifies the number of beams in an additive manufacturing ana-lysis.

• AMBUILD – Specifies printer parameters for the build and other options in an additive manufacturing ana-lysis.

• AMENV – Specifies the build-environment thermal boundary conditions in an additive manufacturing ana-lysis.

• AMMAT – Specifies the build-material melting temperature in an additive manufacturing analysis.

• AMPOWDER – Specifies the powder thermal conditions in an additive manufacturing analysis.

• AMSTEP – Specifies the build-sequence steps in an additive manufacturing analysis.

• AMSUPPORTS – Specifies information about the supports in an additive manufacturing analysis.

• AMTYPE – Specifies the printing process in an additive manufacturing analysis.

2.3.2. Modified Commands

The following commands have been enhanced or otherwise modified:

• /CONFIG – Assigns values to Mechanical APDL configuration parameters. A new GRW_NBUF configurationparameter enables the number of file buffers to grow automatically for most Mechanical APDL binary files.A new MEBA_LIC configuration parameter enables automatic checkout of a Mechanical Batch license duringsolution when the capability is not enabled, useful for PrepPost sessions.

• *DMAT – Creates a dense matrix. When importing a matrix from a Nastran DMIG file, you can now use thelarge field format.

• *EXPORT – Exports a matrix to a file. When exporting a matrix in the Nastran DMIG file format, you can nowuse the large field format.

• *GET – Retrieves a value and stores it as a parameter. The new Entity = PRENERGY label retrieves energyvalues made available via the PRENERGY command.

• NLMESH – Controls remeshing in nonlinear adaptivity. A control option to enable or disable coordinatetruncation (TCOR) of nodal positions during remeshing is now available. The control can help improvesolution repeatability, especially for SMP and DMP ANSYS running with different cores.



Commands

• PLSECT – Displays membrane and membrane-plus-bending linearized stresses. In analyses of 3-D modelswith RHO = 0, the calculated out-of-plane bending stresses can now be included or ignored in the linearizedbending-stress calculations.

• PRSECT – Calculates and prints linearized stresses along a section path. In analyses of 3-D models with RHO= 0, the calculated out-of-plane bending stresses can now be included or ignored in the linearized bending-stress calculations.

• SECTYPE – Associates section type information with a section ID number. A new SUPPORT section type isnow available for additive manufacturing analysis.

• SECDATA – Describes the geometry of a section. The command now supports geometry for supports usedin additive manufacturing analysis.

• *SMAT – Creates a sparse matrix. When importing a matrix from a Nastran DMIG file, you can now use thelarge field format.

2.3.3. Undocumented Commands

The following commands have been undocumented:

ReasonCommand

The ANSYS LS-DYNA explicit dynamic solution methodis obsolete and has been removed. Use Workbench

ANMRES

EDADAPT LS-DYNA instead. See Using Workbench LS-DYNA for anExplicit Dynamics Analysis.

EDALE

EDASMP

EDBOUND

EDBVIS

EDBX

EDCADAPT

EDCGEN

EDCLIST

EDCMORE

EDCNSTR

EDCONTACT

EDCPU

EDCRB

EDCSC

EDCTS


Mechanical APDL

ReasonCommand

EDCURVE

EDDAMP

EDDBL

EDDC

EDDRELAX

EDDUMP

EDENERGY

EDFPLOT

EDGSCALE

EDHGLS

EDHIST

EDHTIME

EDINT

EDIPART

EDIS

EDLCS

EDLOAD

EDMP

EDNB

EDNDTSD

EDNROT

EDOPT

EDOUT

EDPART

EDPC

EDPL

EDPVEL

EDRC



Commands

ReasonCommand

EDRD

EDREAD

EDRI

EDRST

EDRUN

EDSHELL

EDSOLV

EDSP

EDSTART

EDTERM

EDTP

EDVEL

EDWELD

EDWRITE

PARTSEL

REXPORT

RIMPORT

For information about commands that have been undocumented in prior releases, see the archivedrelease notes on the ANSYS Customer Site (p. x).

2.4. Elements

This section describes changes to elements at Release 19.1:

2.4.1. Undocumented Elements

The following elements have been undocumented:

ReasonElement

The ANSYS LS-DYNA explicit dynamic solution methodis obsolete and has been removed. Use Workbench

LINK160

BEAM161 LS-DYNA instead. See Using Workbench LS-DYNA for anExplicit Dynamics Analysis.

PLANE162

SHELL163


Mechanical APDL

ReasonElement

SOLID164

COMBI165

MASS166

LINK167

SOLID168

For information about elements that have been undocumented in prior releases, see the archived releasenotes on the ANSYS Customer Site (p. x).

2.5. Documentation

ANSYS, Inc. continues to refine the Mechanical APDL documentation set. To that end, the followingchanges and enhancements to the documentation have occurred:

2.5.1.Technology Demonstration Guide2.5.2. Documentation Updates for Programmers2.5.3. Feature Archive

2.5.1. Technology Demonstration Guide

The following example problems have been added to the Technology Demonstration Guide:

• Multi-Filar Coil Inside a Tube Modeled with Beam-to-Beam Contact (TD-51) – Three methods for modelinga multi-filar coil inside of a tube. Each model uses a different contact scenario: surface-to-surface, beam-to-surface, or beam-to-beam. A comparison shows that the beam model using beam-to-beam contact offersthe best advantage in terms of simplified modeling and reduced computation time.

• Acoustic Analysis of a MEMS Microphone (TD-53) – Analyzes the response of a silicon micro-machined mi-crophone using 3-D acoustic elements and 3-D electrostatic-structural coupled-field elements.

• Reinforced Concrete Joint Analysis (TD-54) – A reinforced concrete beam-column joint simulation using agradient-enhanced coupled damage-plasticity microplane model.

2.5.2. Documentation Updates for Programmers

Routines and functions documented in the Programmer's Reference have been updated to reflect thecurrent source code. To see specific changes in a file, ANSYS, Inc. recommends opening both the oldand current files (using a text editor that displays line numbers), then comparing the two to determinewhich lines have changed. You can copy the updated files to your system by performing a custom in-stallation of the product.

Notable for this release, the following user subroutine has been enhanced:

• usrsurf116 -- Modifies the film coefficients and bulk temperatures of elements SURF151 and SURF152. Theuser-defined bulk temperature in excess of the fluid node temperature can now vary over the element,achieved by redefining the tb array and setting key(2) = 2.



Documentation

2.5.3. Feature Archive

Legacy features, commands, elements, and theory information continue to move to the Feature Archive.While ANSYS, Inc. intends to support legacy capabilities for the immediate future, some may be undoc-umented in future releases. Consider moving to their recommended replacements.

Notable for this release, contact elements CONTA171, CONTA173, and CONTA176, have been movedto the Feature Archive. Although these legacy elements are available for use in your analysis, ANSYS,Inc. recommends using their midside-noded counterparts instead: CONTA172, CONTA174, and CONTA177.

2.6. Known Incompatibilities

The following incompatibility with prior releases is known to exist at Release 19.1:

2.6.1. Contact Stabilization Damping

Prior to this release, contact stabilization damping was activated by setting the contact element KEY-OPT(15) = 2 or 3 and explicitly specifying the normal and tangential contact damping scaling factorsvia real constants FDMN and FDMT. At this release, contact stabilization damping is activated whenKEYOPT(15) = 2 or 3, even if you do not input FDMN and FDMT; default values are provided for bothreal constants. You may see slight differences in convergence behavior due to this change.


Mechanical APDL

Chapter 3: Autodyn Release Notes

The ANSYS Autodyn product encompasses of all of the following explicit solvers: FE (Lagrange), Euler,FCT, ALE, and SPH, and various means to couple them together. All are integrated into the AutodynComponent system, while the FE (Lagrange) and Euler—including Euler-Lagrange coupling—are alsointegrated into the Explicit Dynamics Analysis system.

3.1. New Features and Enhancements


The following new features and enhancements are available in release 19.1. Refer to the product specificdocumentation for full details.

• No new features at release 19.1.



Chapter 4: Aqwa Release Notes

This release of the Aqwa related products contains all capabilities from previous releases. The followingenhancements are available in release 19.1. Refer to the product specific documentation for full detailsof the new features.

4.1. Aqwa Solver Modules4.2. Aqwa Graphical Supervisor (AGS)4.3. Hydrodynamic Analysis Systems

4.1. Aqwa Solver Modules

The following new features provide extended capabilities in the Aqwa solver modules:

No new features at release 19.1.

4.2. Aqwa Graphical Supervisor (AGS)


4.3. Hydrodynamic Analysis Systems

The following new features provide extended capabilities in the Hydrodynamic Analysis Workbenchsystems:




Chapter 5: ANSYS Composite PrepPost (ACP)

The following enhancements are available in release 19.1. Refer to the product specific documentationfor full details of the new features.

5.1. New Features in ANSYS Composite PrepPost (ACP) 19.15.2. Supported Platforms for ANSYS Composite PrepPost (ACP) 19.15.3. Known Limitations and Incompatibilities

5.1. New Features in ANSYS Composite PrepPost (ACP) 19.1

The following new features were added to ANSYS Composite PrepPost (ACP) for the 19.1 release.5.1.1. HDF5 Composite CAE Interface5.1.2. Improved Import/Conversion of Legacy Models5.1.3. Ply-wise Field Definitions for Variable Materials5.1.4. ACP Linux is Launched without Start Script

5.1.1. HDF5 Composite CAE Interface

The import and export of the Composite CAE format that allows to exchange composite definitionsbetween different applications has been improved with respect to performance and usability. The exportand import can now be restricted to a subdomain or even certain plies (export only). See HDF5 Com-posite CAE Format.

5.1.2. Improved Import/Conversion of Legacy Models

The import of Mechanical APDL (legacy) models with section data has been enhanced. It automaticallyconverts the section-based layer definitions into ACP composite definitions. This allows you to bringcomposite definitions from legacy models into a WB project. See Import of Legacy Mechanical APDLComposite Models.

5.1.3. Ply-wise Field Definitions for Variable Materials

The performance of ply-wise field definitions has been improved, both in ACP and in Mechanical. SeeField Definitions.

5.1.4. ACP Linux is Launched without Start Script

ACP is now capable of directly using its parent environment, which can be configured along thestandard Linux mechanisms. Therefore, the start script has become obsolete and removed. Users whoused to modify the ACP start script no longer need to do so.

5.2. Supported Platforms for ANSYS Composite PrepPost (ACP) 19.1

Platform/OS levels that are supported in the current release are posted on the ANSYS website.



http://storage.ansys.com/doclinks/ansys.html?code=PlatformSupport-ALU-K1a

5.3. Known Limitations and Incompatibilities

The following known incompatibilities with previous releases for ANSYS Composite PrepPost in Release19.1.

5.3.1. OpenGL Drivers on Linux

On Red Hat Enterprise/CentOS Linux > 7.2 systems, ACP 3D acceleration can have issues with thestandard (nouveau) graphic drivers installed. Make sure to use the latest drivers from NVIDIA or ATIwhen running ACP.


ANSYS Composite PrepPost (ACP)

Part II: ANSYS Fluids Products

Release notes are available for the following ANSYS Fluids products:

Fluent (p. 27)CFX (p. 31)TurboGrid (p. 33)ANSYS BladeModeler (p. 35)CFD-Post (p. 37)Polyflow (p. 39)Forte (p. 41)ANSYS Chemkin-Pro (p. 43)FENSAP-ICE (p. 45)

Chapter 1: Fluent Release Notes

The following sections contain release information for ANSYS Fluent 19.1.1.1. Supported Platforms for ANSYS Fluent 19.11.2. New Features in ANSYS Fluent 19.11.3. Updates Affecting ANSYS Fluent 19.1 Code Behavior

Backwards Compatibility: In most instances, ANSYS Fluent 19.1 can read case files and data files fromall past Fluent releases. However, due to product improvements and defect fixes, results obtained fromold cases running in new releases may differ to some degree from the previously obtained results. Ad-ditionally, infrequent changes made in UDF macros over time could lead to some user-defined functionsfailing to compile without modification. See the product documentation for more information.

1.1. Supported Platforms for ANSYS Fluent 19.1

Information about past, present, and future operating system and platform support is viewable via theANSYS website.

1.2. New Features in ANSYS Fluent 19.1

Release 19.1 of Fluent primarily corrects important defects identified in the 19.0 and earlier releases. Inorder to minimize migration effort from 19.0, no new functionality has been introduced, and the userinterface and results compatibility has been maintained. A partial list of fixed defects appears below.Several other fixes are noted in the Resolved Issues and Limitations document for those items previouslyincluded in the Known Issues and Limitations document. Where defect fixes may result in changes inresults or behavior, these are noted in the Updates Affecting ANSYS Fluent 19.1 Code Behavior section.

General Stability

• Fixed various issues that could result in unexpected errors or termination in some circumstances.

Fluent in Workbench

• Solver precision is now automatically set based on the incoming case file when a case file is importedinto the Fluent cell in Workbench.

Fluent Meshing

• Fixed several stability/performance issues with native polyhedra generation.

Graphics / Post

• Fixed an issue with solution animations not being created correctly with the Explicit DBNS solver.

• Fixed an issue in which unsteady statistics for Custom Field Functions were not computed correctly forsolid regions.




https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v191/ai_ril/rilFluent.html

https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v191/ai_lmt/KIL160Fluent.html

https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v191/ai_rn/fl_behavior.html

Solver Meshing

• Fixed an issue in which zones were not correctly separated in parallel.

• Fixed an issue that prevented correct rigid body motion with the Explicit DBNS solver.

• Fixed an issue that prevented correct behavior of SDOF_Overwrite_Motion UDFs with contact.

• Fixed an issue with the Poly Unstructured Mesh Adaption (PUMA) algorithm that could lead to meshfailures in cases with poor quality surface meshes.

Discrete Phase

• Fixed minor postprocessing issues for the Macro Particle Model.

• Fixed incorrect creation of condensate particles in the LWF model under some circumstances.

Reacting Flow

• Fixed an issue in which pollutant postprocessing iterations in transient simulations could incorrectlyaffect the primary solution, usually negligibly.

• Fixed an issue in which the washcoat coefficient was not correctly applied.

MSMD Battery Model

• Fixed incorrect ECM polynomial fits.

1.3. Updates Affecting ANSYS Fluent 19.1 Code Behavior

The following sections list the code changes in ANSYS Fluent 19.1.1.3.1. Meshing Mode1.3.2. Solution Mode

1.3.1. Meshing Mode

This section contains a list of code changes implemented in the meshing mode of ANSYS Fluent 19.1that may cause behavior and/or output that is different from the previous release.

CAD Import

• When importing IGES and STEP geometry files from products other than ANSYS DesignModeler,changes may be observed in the number of face/edge zones and the naming conventions, dueto the use of new Spatial-based translators instead of the Parasolid-based translators found inprevious releases. These changes will require you to update any scripts or journals to handle thenew number of zones as well as to use the new naming conventions.

Note

On the Windows platform, you can import and save the geometry in ANSYS SpaceClaimto capture the changes to the number of face zones.


Fluent

• When importing CAD geometries, it should be noted that the Auto-Create Scoped Sizing controldefines the scope for new objects created during CFD surface mesh import, and the scopedefinition is defined for all objects, and is not specific to a certain object.

1.3.2. Solution Mode

This section contains a list of code changes implemented in the solution mode of ANSYS Fluent 19.1that may cause behavior and/or results that are different from the previous release.

Reacting Flow

• For transient decoupled pollutants simulations, a fix has been introduced to eliminate updating theboundary conditions and material properties of the background frozen flow field during postprocessingsub-iterations. This may result in slight differences in the transient background flow field compared toprevious releases. The flow field will be identical to that observed in a run without postprocessingpollutants.

• A defect in the application of washcoat coefficient beginning with Release 17.0 of Fluent has beenfixed. As a result of this defect correction, you may observe that the washcoat coefficient now has alarger effect on the solution than in releases since R17.0.

Discrete Phase Model

• For cases that use the Use DPM Domain option of the Hybrid parallel DPM tracking mode,calculations may be significantly faster (especially when running on many processors) due toimprovements in communication and load balancing.



Updates Affecting ANSYS Fluent 19.1 Code Behavior

Chapter 2: CFX Release Notes

The following sections contain release information for Release 19.1 of ANSYS CFX.2.1. Supported Platforms2.2. New Features and Enhancements2.3. Incompatibilities

2.1. Supported Platforms



This section lists features and enhancements that are new in Release 19.1 of ANSYS CFX.

• The following enhancements have been made for transient blade row models that are solved using theHarmonic Analysis solution method:

– Solid domains can be included for conjugate heat transfer.

– Convergence for the turbulence equations has been improved by suppressing the transient term. Youcan modify the transient term for an equation class by visiting the Solver Control details view > EquationClass Settings tab and changing the Transient Scheme setting. For example, to restore the transientterm, set Transient Scheme to a value other than None. For details, see Transient Scheme in the CFX-Solver Modeling Guide.

• When mapping a profile, variable Node Mapping Status is created by default, enabling you to visualizeany unmapped nodes. For details, see Profile Data Mapping (Option = Map to Mesh Regions) in the CFX-PreUser's Guide.

• You can request that a System Coupling Input (.scp) file is written regardless of whether any boundaryconditions use the System Coupling option, by selecting Always write System Coupling Input File inthe Execution Control settings in CFX-Pre. For details, see Execution Control in the CFX-Pre User's Guide.

• ANSYS CFX can participate in command-line coupled multiphysics simulations run entirely from the command-line using the System Coupling Service v2.0, a second-generation coupling engine that provides enhancedcontrol of coupled analyses. For details, see System Coupling in the ANSYS, Inc. Release Notes (p. 69) andCoupling CFX to an External Solver in the CFX-Solver Modeling Guide.

• There is a new expert parameter,reserve solver licenses, that attempts to ensure solver licenseavailability for runs that begin with a preliminary tool, such as the paritioner. For details, see Run ControlParameters in the CFX-Solver Modeling Guide.

• Solver performance has been improved for cases that use a Homogeneous Binary Mixture (HBM) in modelingcavitation or flashing.




2.3. Incompatibilities

This section describes the operational changes, the procedural changes (actions that have to be donedifferently in this release to get an outcome available in Release 19.0), and the support changes (func-tionality that is no longer supported) in Release 19.1 of ANSYS CFX.

• It is no longer possible to couple ANSYS CFX to ANSYS Mechanical via ANSYS Multi-field (MFX). MFX casescreated in previous versions cannot be run in ANSYS CFX Release 19.1 or later. In order to perform FSI simu-lations, you can couple ANSYS CFX to ANSYS Mechanical via System Coupling. For details, see Coupling CFXto an External Solver in the CFX-Solver Modeling Guide.

• In Release 19.1, the compiler options used by cfx5mkext for User Fortran have been made consistent withthe compiler options used to build the CFX-Solver.

• It is no longer possible to save 3D images to a CFD Viewer State (3D) file. Use the AVZ (3D) option to save3D viewer files.

• The monitor data file (named 'mon') now includes dimension and quantity data to provide future supportfor units display in CFD-Post and CFX-Solver Manager. There is usually no need for this file to be accesseddirectly, so this change should have no visible impact. However, to revert to the previous file format withoutdimension and quantity data, use the expert parameter setting:monitor units = f.


CFX

Chapter 3: TurboGrid Release Notes

The following sections contain release information for Release 19.1 of ANSYS TurboGrid.3.1. Supported Platforms3.2. New Features and Enhancements3.3. Incompatibilities




This section lists features and enhancements that are new in Release 19.1 of ANSYS TurboGrid.

• Mesh quality is improved on the Inlet and Outlet interfaces. This change affects new meshes as well asmeshes that are regenerated from existing cases.


This section describes the operational changes, the procedural changes (actions that have to be donedifferently in this release to get an outcome available in Release 19.0), and the support changes (func-tionality that is no longer supported) in Release 19.1 of TurboGrid.





Chapter 4: ANSYS BladeModeler Release Notes

The following sections contain release information for Release 19.1 of BladeGen and BladeEditor.4.1. Supported Platforms4.2. BladeGen4.3. BladeEditor



4.2. BladeGen

4.2.1. New Features and Enhancements

This section lists features and enhancements that are new in Release 19.1 of ANSYS BladeGen.

• Flank milled blades can now be saved to and loaded from Neutral Data Files (NDF).

4.3. BladeEditor


This section lists features and enhancements that are new in Release 19.1 of ANSYS BladeEditor.

• Flank milled blades can now be saved to and loaded from Neutral Data Files (NDF).

• You can set up variable shroud tip clearance. With the “Shroud Tip Clearance” property set to “Shroud Gap”,the properties “LE Gap” and “TE Gap” are available and can now optionally be parameterized.

• In Release 19.1, when using Create New > Geometry (BladeEditor) from a Vista CCD component, the shroudtip clearance is defined using a fixed-distance shroud gap. In previous releases, the shroud tip clearance isdefined using a layer (defined at a constant % span).




Chapter 5: CFD-Post Release Notes

The following sections contain release information for Release 19.1 of ANSYS CFD-Post.5.1. Supported Platforms5.2. New Features and Enhancements5.3. Incompatibilities




This section lists features and enhancements that are new in Release 19.1 of ANSYS CFD-Post.

Release 19.1 of CFD-Post has no new features or enhancements.


This section describes the operational changes, the procedural changes (actions that have to be donedifferently in this release to get an outcome available in Release 19.0), and the support changes (func-tionality that is no longer supported) in Release 19.1 of CFD-Post.





Chapter 6: Polyflow Release Notes

The following sections contain release information for ANSYS Polyflow 19.1.6.1. New Features6.2. Supported Platforms

6.1. New Features

The new features in ANSYS Polyflow 19.1 are as follows:

• The generalized first normal stress difference is now available as a postprocessing calculation. Formore information, see Calculation of the Generalized First Normal Stress Difference in the PolyflowUser's Guide.

• Viscoelastic convergence strategies can potentially be combined. For more information, see Conver-gence Strategy for Viscoelasticity in the Polyflow User's Guide.

• Contact detection for shells (for blow molding and thermoforming simulations) has been accelerated.


For information about past, present, and future operating system and platform support, see the PlatformSupport section of the ANSYS Website.





Chapter 7: Forte Release Notes

The enhancements and defect corrections listed below for Release 19.1 are since ANSYS 19.0.7.1. New Features and Enhancements7.2. Resolved Issues and Limitations


This section lists new features and enhancements in Release 19.1 ofANSYS Forte CFD, organized bytopic.

Simulation Interface

• Forte and other ANSYS user documentation is available as HTML pages linked from the Help menu orthe Windows Start menu. PDF versions of the manuals can be downloaded with other ANSYS docu-mentation from the ANSYS Help site.

• Forte documentation now includes a Forte Best Practices. The Forte Quick Start Guide and Forte Tutorialsmanuals are available with the other tutorial material at the ANSYS Help site.

• Improved the handling and specification of GT-SUITE files needed in the co-simulation setup for GT-SUITE plus Forte in gas-exchange simulations.

• A new Sources node, under Models in the project tree, allows users to specify arbitrary source termsfor species (mass), momentum, or energy. Porous media can also be defined for certain regions as anoption in this project node.

Job Submission, Monitoring, and Running Options

• Integration with ANSYS Workbench allows launching and running Forte from within a Workbenchproject, including:

– Direct link from ANSYS SpaceClaim to Forte , providing geometry in STL format that is automaticallyconsumed by the Forte project. This allows parameterization of the geometry within ANSYS SpaceClaimand the ANSYS Workbench framework.

– Direct links to ANSYS CFD-Post for post-simulation analysis.

– Identification of Forte project parameters for use in ANSYS DesignXplorer.

• Automated the creation of a point cloud from a user-defined cut-plane, to facilitate monitoring andexport of solution data along a cut-plane.

• Increased the number of bins output to the particle_size_distribution.csv Monitor file toprovide more resolution of the particle size distribution when particle sizes are tracked.

Engineering Models and Computation



• Added User Defined Function (UDF) functionality that allows users to write their own routines to definelocal values of laminar flame speed and/or the turbulent flame speed correlation to laminar flame speed,for use in the flame propagation model.

• Pre-reduced chemistry sets that are included with the Forte installation have been updated for targetedfuels, now including: natural gas, gasoline and diesel fuels, and natural gas/diesel dual-fuel. Comparedto the previous Forte pre-reduced mechanisms, the reaction pathways have been improved, and reducedmechanisms are generally smaller (in terms of number of species) while maintaining the same targetlevel of accuracy and applicability.

7.2. Resolved Issues and Limitations

For a list of issues that have been resolved in Release 19.1, refer to the Resolved Issues and Limitationsdocument on the ANSYS Help site.


Forte

http://storage.ansys.com/doclinks/ansys.html?code=RIL-ALU-K1a

Chapter 8: Chemkin-Pro Release Notes

The following sections contain release information for Release 19.1 of Chemkin-Pro:8.1. New Features and Enhancements8.2. Resolved Issues and Limitations


Chemkin-Pro

• Chemkin-Pro and other ANSYS user documentation is available as HTML pages linked from the Helpmenu or the Windows Start menu. PDF versions of the manuals can be downloaded from the ANSYSwebsite. The documentation now includes Mechanism Reduction Best Practices.

• New heat-transfer options are now available for all Single-zone and Multi-zone Internal CombustionEngine models. The options provide more flexibility in controlling the heat-transfer during the combus-tion simulation. New options include:

• Heat Transfer coefficient (constant or profile).–

– Huber-Woschni correlation, which uses a different method to estimate the gas velocity than theWoschni correlation.

– Hohenberg correlation – An alternative to the Woschni correlation.

• The recently added Diffusion Flamelet Generation model has been extended to allow generation of aflamelet table suitable for use with ANSYS Fluent’s Flamelet Generated Manifold combustion-modeloption, in addition to the Steady Diffusion Flamelet model. The generation now also includes the optionto compute extinguishing flamelets.

• For co-simulation using GT-SUITE from Gamma Technologies with the Chemkin-Pro Internal CombustionEngine (IC Engine) models, there is a new option for specifying the combustion burn rate, which usesa turbulent flame-speed correlation to laminar flame-speed, where the laminar flame-speed is pre-de-termined for a representative gasoline blend.

• Changed the default to disable the Overflow/Underflow check in the Solver panel for Plug Flow Reactors,since this option can give false positives that trigger interruption of the solution.

• Automatically create a project archive with input only in the background when a project is saved.

Model Fuel Library

• Significant updates to acetylene kinetics to account for pressure-dependent reactions and to expandthe range of applicability, including sooting conditions in engine combustion. The updates result inbetter agreement with experimental data for laminar flame-speeds, high-pressure conditions and igni-tion-delay times, especially when acetylene is part of the fuel blend.

• Updated reaction kinetics for aromatics, cyclo-alkanes and iso-alkanes, which improve predictions forfuel consumption, CO production, laminar flame speeds, and ignition times.



• Improvements to the particle number and size predictions from the MFL detailed soot surface kineticsmechanism, as verified against experimental data in both fundamental flames and internal combustionengine conditions.

• Based on the improved kinetics, the pre-reduced MFL mechanisms have been updated for targetedfuels, now including: natural gas, propane, gasoline, diesel, and jet fuels. Compared to the previousMFL pre-reduced mechanisms, the mechanisms for these fuels are generally smaller (in terms of numberof species), while maintaining the same target level of accuracy and applicability.

• The MFL Report is available as an installed Model Fuel Library Manual, and included as a link to in theChemkin-Pro Help and Start menus.

Reaction Workbench

• Allow the Interrupt Session option to be canceled. [DE168422]




Chemkin-Pro

http://storage.ansys.com/doclinks/ansys.html?code=RIL-ALU-K1a

Chapter 9: FENSAP-ICE Release Notes

The following sections contain release information for ANSYS FENSAP-ICE 19.1.9.1. New Features and Enhancements in ANSYS FENSAP-ICE9.2. Resolved Issues and Limitations in ANSYS FENSAP-ICE9.3. Beta Features

9.1. New Features and Enhancements in ANSYS FENSAP-ICE

• General symmetry plane implementation updates

– All symmetry boundary types, whether general or X,Y,Z symmetry, are now formulated with the use ofghost cells that are copied from the inside of the domain across the symmetry boundary conditions. Thefull FEM volume integral is assembled for symmetry nodes rather than imposing face- and node-basedboundary conditions. This upgrade improves the accuracy of shear stresses, heat fluxes, and particle col-lection efficiencies on the symmetry nodes of walls.

• FENSAP flow solver improvement

– Radial equilibrium can now be used on exits of non-periodic grids. These exits need to be circular, butcan be oriented arbitrarily.

– Radial equilibrium is now piece-wise linear, with the number of bands provided by you. Specifying a singleband is identical to the legacy linear pressure gradient implementation. The piece-wise linear approachis better suited to the non-uniform angular velocity typically found at such outlets.

– Convergence of flows with hot air jets (as found, for example, in piccolo chambers or heated spinnercavities) has been accelerated by optimizing the local time stepping algorithm of the energy equationused in these regions. Cases show up to 10x speed-up in the convergence of the adiabatic temperatureson the inner walls of such domains using the same CFL number.

– Improved convergence of slip-wall boundaries by actively blocking possible fluid entry into the domainfrom these boundaries during the transient solution period, which can happen if the domain is initializedwith a uniform free stream velocity.

– Improved handling of flow reversal that can form at outlet boundaries. Recirculation that reaches outletsis no longer force-blocked, but kept under control by a face integral-based boundary curtain condition.This allows more physically realistic results at flow reversal exits and reduces the amount of blockageseen at such exits.

9.2. Resolved Issues and Limitations in ANSYS FENSAP-ICE

See the Resolved Issues and Limitations document for information on previous limitations and key defectsresolved in the current release.

9.3. Beta Features

• CFD-Post Macros



– It is now possible to more easily post-process ICE3D results in CFD-Post using two macros:

Ice Cover – 3D – View macro: This macro uses ICE3D output files and displays them within CFD-Post’s 3D Viewer allowing you to view computed ice shapes/solutions, save figures, and generateanimations.

Ice Cover – 2D – Plot macro: This macro uses ICE3D output files to create 2D plots using CFD-Post’sChartViewer. You can easily generate curves of the computed ice shapes and solutions, export datapoints of all plotted curves and save 2D plots as figures.


FENSAP-ICE

Part III: ANSYS Electronics Products

Release notes are available for the following ANSYS Electronics products:

Icepak (p. 49)

Chapter 1: Icepak Release Notes

Release 19.1 of the ANSYS Icepak application offers most of the capabilities from previous releases plusmany new features and enhancements.

• Introduction (p. 49)

• New and Modified Features in ANSYS Icepak 19.1 (p. 49)

• Resolved Issues and Limitations in ANSYS Icepak 19.1 (p. 49)

1.1. Introduction

ANSYS Icepak 19.1 is a release of ANSYS Icepak that has new features and resolved issues and limitations.

1.2. New and Modified Features in ANSYS Icepak 19.1

• Meshing

– Added the Enable per-object function to the Multi-level meshing max levels panel to subdivide the mesharound an object up to the maximum level specified for an object.

• Solver Settings

– Added Reuse existing meshes option to the Solve and Parameters and Optimization panels to use an ex-isting mesh and avoid rengenerating the mesh when there were no changes to the model geometry.

• Preferences

– Added the Save metal fraction calculation images function to the Preferences panel to save metalfraction calculation images as .png files in the project directory.

1.3. Resolved Issues and Limitations in ANSYS Icepak 19.1

• Import/Export

– After IDF import, some power values are not imported correctly. (159516)

– After IDF import, editing mutiple objects does not function properly. (163243)

– For networks with several internal points with transient power, the power values are not exported properly.(163355)

• Meshing

– If using stair-step meshes inside an assembly, the mesh loading may failed if the mesh count is very largeeven if sufficient RAM memory are available on the computer. (160689)

– Assembly boundaries are not meshed correctly in certain 2D MLM configurations. (161176)



– When refreshing input data, any mesh parameters (local mesh settings) are lost. (164851)

• Model Building

– Renaming an object does not work properly when updating after editing other parameters. (162689)

– For a specific case, monitor points do not update properly when editing object geometry. (163091)

– No warning message is displayed when a block with individual side specifications overlaps with a coincidentplate object. (167399)

• Object Parameters

– The value for the diffusivity of water (@320K) is incorrect. (163688)

– When individual sides are defined on one side of a fluid block, no flow solution is obtained inside thefluid block after assigning one side as the surface. (164560)

• Post-processing

– When creating transient animation of post processing, if more than two items exists in the post-processingnode, the color bar disappears. (157520)

• Reports

– For a specific case, values for a network face node are not present in the summary report. (154086)

– For a specific model, the solar loading results are not reported correctly. (166842)

• Solution

– When attempting to run an Icepak simulation from SIwave, the simulation stops without reporting anerror. (165242)

• Solver Setup

– When setting the Trials across top option on the Parameters and optimization panel, the setting cannotbe retained after closing it. (163214)

– Thre Use model-based flow initialization option is not retained when enabled. (164190)

– Errors reported about missing joule heating source specification when joule heating is disabled duringsolve. (166472)

• User Interface

– Specific Icepak pop-up messages appear off screen or behind other panels. (165567)


Icepak

Part IV: ANSYS Geometry & Mesh Prep Products

Release notes are available for the following ANSYS Geometry & Mesh Prep products:

DesignModeler (p. 53)CAD Integration (p. 55)Meshing (p. 57)IC Engine (p. 59)ICEM CFD (p. 61)

Chapter 1: Geometry Release Notes

Release 19.1 has no new features or enhancements.



Chapter 2: CAD

Note

• Support for GAMBIT Reader will be discontinued after the Release of ANSYS 19.2.

• The capability to save Workbench project data to Teamcenter will no longer be supported afterthe Release of ANSYS 19.2.

This section summarizes the new features in CAD Integration Release 19.1.

For more information, see the CAD Integration section of the ANSYS Help.

Geometry Interfaces Update for New CAD Releases

Geometry interfaces are updated to support new CAD releases including:

• ACIS 2018 (Reader support on Linux)

• AutoCAD 2018 (Reader)

• Inventor 2018 (Reader)

• NX 12.0 (Plug-In)

• Parasolid 30.0 (Reader / Plug-In)

• Solid Edge ST10 (Reader)

For detailed version support information, see CAD Integration> Geometry Interface Support in the CADIntegration section of the ANSYS Help.

Information about past, present and future CAD, operating system and platform support is viewablevia the ANSYS, Inc. website (Support> Platform Support).



Chapter 3: Meshing Application Release Notes

Release 19.1 of the Meshing application contains many new features and enhancements. Areas whereyou will find changes and new capabilities include the following:

3.1. Changes in Product Behavior from Previous Releases3.2. Resuming Databases from Previous Releases3.3. Sizing Enhancements3.4. Gasket Meshing3.5. Robustness Improvements

Many of the enhancements detailed in the Mechanical Application Release Notes (p. 3) are also relevantto the Meshing application.

3.1. Changes in Product Behavior from Previous Releases

This release includes the following changes in product behavior:

• The Sizing Options have been simplified to align more closely with best practices. Certain older options andbehaviors that are no longer useful or are no longer best practices as a result of more recent improvementsto the Meshing application have been eliminated (deprecated).

• The options for Size Function, Relevance, Relevance Center, Max Face Size, and Max Tet Size have beenremoved.

3.2. Resuming Databases from Previous Releases

If you resume a database from a previous release into Release 19.1, you must check all size settings inthe resumed database carefully.

• For databases from previous releases (prior to Release 19.1), the Resolution will be explicitly set to a valuewhich is not the default.

• Databases from previous releases containing a Body of Influence will be resumed with the sizing set touniform. Only the Growth Rate option will be available.

• Databases from previous releases with a set up containing a MultiZone method control with the elementoption set to Gasket will be resumed with a Gasket mesh control. See Gasket Meshing for details.

3.3. Sizing Enhancements

The following enhancements have been made:

• The option for Size Function has been removed. In its place, enable Use Adaptive Sizing, or select CaptureCurvature, Capture Proximity, both, or neither to control how mesh sizing is distributed.

• A new option Resolution is available to control the mesh distribution when Use Adaptive Sizing is selected.



• The Adaptive Resolution (default setting Program Controlled, range 0 to 7) can be used to change themesh resolution from coarse to fine.

• The Element Size option is now available under the Defaults group.

• The options for Relevance, Relevance Center, Max Face Size, and Max Tet Size have been removed.

The Element Size corresponds to the Max Face Size, the Max Size corresponds to the Max Tet Size.

3.4. Gasket Meshing

A Gasket Mesh Control can be defined in the Mesh folder and can be applied to multiple bodies. SeeGasket Meshing for details.

3.5. Robustness Improvements

This release also includes improved robustness through improvements and defect fixes for the followingfeatures:

• Shell meshing

• Washers

• MultiZone


Meshing

Chapter 4: IC Engine Release Notes

Release 19.1 has no new features.

The documentation for IC Engine has moved to the Fluent in Workbench User's Guide, with the sectionsrelevant to Forte moving to the Forte User's Guide. To access documentation files, go to the document-ation area of the customer site.





Chapter 5: ICEM CFD

Release 19.1 development efforts included enhancement of ANSYS ICEM CFD as a standalone applicationas well as continued development of its underlying technology exposed within the ANSYS Workbench-based Meshing application.

ANSYS ICEM CFD 19.1 includes new features and improvements in the following areas:5.1. Multizone Block Editing improvements

5.1. Multizone Block Editing improvements

The following enhancements were made to improve block editing:

• Converting free faces with more than four vertices to mapped faces has been improved. When identi-fying corner and side vertices, as soon as four corners are unambiguous, the conversion will occur. Inaddition, the software is able to recognize concentric edge loops characteristic of an annular face, andmake the conversion from free to mapped without identifying any corner or side vertices.



Part V: ANSYS Simulation Products

Release notes are available for the following ANSYS Simulation products:

Workbench (p. 65)System Coupling (p. 69)ACT (p. 71)RSM (p. 73)DesignXplorer (p. 75)ANSYS Viewer (p. 77)

Chapter 1: Workbench

The ANSYS Workbench platform offers many new features and enhancements. Areas where you willfind changes and new capabilities include the following:

1.1. ANSYS Workbench1.2. External Connection Add-In1.3. ANSYS Workbench and EKM1.4. Engineering Data Workspace1.5. External Data1.6. External Model1.7. Enhancement to Mechanical Model Cells1.8. FE Modeler1.9.TurboSystem Release Notes

1.1. ANSYS Workbench

Enhancements were made to the following areas for Release 19.1:1.1.1. General Workbench Enhancements1.1.2. Design Point Update Enhancements1.1.3. ANSYS Workbench-System Coupling Enhancements1.1.4. Mechanical APDL Enhancements1.1.5. ANSYS Workbench-Remote Solve Manager Enhancements

1.1.1. General Workbench Enhancements

Project archive files (*.wbpz) can now be imported via the File → Import menu.

1.1.2. Design Point Update Enhancements

When submitting multiple jobs for a design point update through Remote Solve Manager (RSM), if noneof the design points that are part of a job have any files associated with them, an archive file is nolonger recreated for this job. Where possible, existing archive files are used for the submitted jobs.

1.1.3. ANSYS Workbench-System Coupling Enhancements

No enhancements were made in Workbench with regard to System Coupling.

1.1.4. Mechanical APDL Enhancements

No enhancements were made in Workbench with regard to Mechanical APDL.

1.1.5. ANSYS Workbench-Remote Solve Manager Enhancements

No enhancements were made in Workbench with regard to Remote Solve Manager (RSM).



1.2. External Connection Add-In

The External Connection Add-in has been deprecated. ANSYS ACT has superseded External Connectionas the best-in-class for integrating custom external applications and processes into the ANSYS WorkbenchProject Schematic workflow.

In the 19.0 release, support continued for existing projects that include an External Connection system,but not for new development. However, External Connection is fully deprecated in the 19.1 release. Weencourage all customers and partners engaged in Workbench customization to transition to ACT.

For specific end-of-life support, contact your local ANSYS account manager or established supportrepresentatives. For more information, see the release notes for ACT (p. 71).

1.3. ANSYS Workbench and EKM

EKM has been deprecated in the 19.1 release.

Workbench 19.1 is not compatible with existing installations of EKM. All EKM connection and repositoryactions have been removed from Workbench. Job submission from Workbench to an EKM portal is notsupported.

For more information, contact your local ANSYS account manager or ANSYS support.

1.4. Engineering Data Workspace

For Release 19.1, the following enhancements have been made to the Engineering Data Workspace:

• Alternating Stress Mean Stress and Alternating Stress R-Ratio are no longer available properties in theLife category. These properties have been replaced by the property S-N Curve, along with either theMean Stress or the R-Ratio Field Variables. Temperature can now also be used as a Field Variable for S-N Curve data. These options enable you to create your desired fatigue material properties for StaticStructural and Transient Structural analyses.

• Melting Temperature is now available as a Physical Property for Additive Manufacturing.

• Water Liquid is now a default material in the Favorites data source for Acoustics systems.

• Granta Design Sample Materials, a library of more than 100 materials is now available in EngineeringData Sources.

• Additive Manufacturing Materials, a library of materials for additive manufacturing is now available inEngineering Data Sources.

• Specific Heat-Constant Pressure and Thermal Conductivity now support the use of the field variables:Coordinate X, Coordinate Y, Coordinate Z, and User Defined.

1.5. External Data

No enhancements were made to the External Data add-in.


Workbench

1.6. External Model

For Release 19.1, External Model has no new features or enhancements. However, you may wish to referto the Model Assembly and External Model Enhancements (p. 6) section of the Mechanical releasenotes for enhancements in the Mechanical application that are based on importing data through theExternal Model system.

1.7. Enhancement to Mechanical Model Cells

For Release 19.1, the Mechanical Model cell has no new features or enhancements.

1.8. FE Modeler

As we previously announced, FE Modeler has now been undocumented at Release 19.1 because newerANSYS technologies, such as External Model, have made the FE Modeler application obsolete.

1.9. TurboSystem Release Notes

TurboSystem is a set of software applications and software features that help you to perform turboma-chinery analyses in ANSYS Workbench. For details, see Introduction in the TurboSystem User's Guide.

These release notes cover:

• Turbo Setup system

• Performance Map system

• Vista AFD, Vista CCD, Vista CPD and Vista RTD

• Turbo Mesh cell

• Vista TF

These release notes do not cover:

• ANSYS BladeModeler (see ANSYS BladeModeler Release Notes (p. 35))

• TurboGrid (see TurboGrid Release Notes (p. 33))

• CFX-Pre (see CFX Release Notes (p. 31))

• CFD-Post (see CFD-Post Release Notes (p. 37))

Note

After reviewing the TurboSystem release notes, you are encouraged to see Usage Notes,which describes some known TurboSystem workflow issues and recommended practices forovercoming these issues.

1.9.1. Supported Platforms

Platform/OS levels that are supported in the current release are posted on the Platform Support sectionof the ANSYS Website.



TurboSystem Release Notes




This section lists features and enhancements that are new in Release 19.1 of TurboSystem.

• When you issue the Create New > Geometry command or Create New > Throughflow command from aVista CCD/CPD/RTD system, the BladeEditor geometry in the resulting Geometry system or Throughflowsystem no longer includes an ExportPoints feature. As a result, if you subsequently pass the BladeEditorgeometry to TurboGrid (for example, via Transfer Data To New > TurboGrid), the geometry will, by default,be passed using CAD mode (which is preferred) rather than Profile Points mode.

• By default, when a TurboGrid (Turbo Mesh) component is connected to an upstream BladeEditor (Geometry)component, it uses the blade names given by the blade features, except when the Turbo Mesh componentis created by the Create New > Turbomachinery Fluid Flow (BladeEditor) command. In this case, TurboGriduses standard blade names. You can optionally force TurboGrid to use standard blade names by selectingthe Turbo Mesh cell property Ignore Upstream Blade Names; you might want to do this, for example, whenswitching from BladeGen to BladeEditor as your geometry source within an existing Workbench project, inwhich case the downstream systems would be expecting standard blade names.

• In Release 19.1, when using Create New > Geometry (BladeEditor) from a Vista CCD component, the shroudtip clearance is defined using a fixed-distance shroud gap. In previous releases, the shroud tip clearance isdefined using a layer (defined at a constant % span).


Workbench

Chapter 2: System Coupling

System Coupling now offers an updated version of its coupling engine: the System Coupling Servicev2.0. A robust API provides access to the full System Coupling infrastructure, enabling you to set up,modify, and run coupled multiphysics simulations entirely from the command line. Features include:

• Support for both steady-state and transient co-simulations

• Setup of participant physics either inside or outside of ANSYS Workbench

• Enhanced control over the creation of coupled analyses and the modification of analysis settings

• Automatic, coordinated start-up and execution for coupling participants and the coupling service

• Advanced commands for an interactive solve process

• Automated restarts from final or intermediate results

At the 19.1 release, ANSYS CFX and ANSYS Mechanical are fully supported as coupling participants.ANSYS Fluent is supported on a modified beta-basis; for details, see your ANSYS support representativeand the Fluent Beta Features Manual.

For a general discussion of core System Coupling capabilities, see Understanding System Coupling.

For information about the new command-line functionality, see Using Command-Line System Coupling(v2.0).



Chapter 3: ACT

The following enhancements are available in ANSYS ACT 19.1. Unless noted otherwise, referenced topicsare in the ANSYS ACT Developer's Guide.

ACT Customization SuiteANSYS ACT has superseded the ANSYS Workbench Software Development Kit (SDK) and External ConnectionAdd-In as the best-in-class tool set for customizing ANSYS products. We encourage all customers andpartners engaged in Workbench customization to transition to ACT.

ANSYS 18.2 included the final public distribution of the SDK and the final release of the ExternalConnection Add-In. Existing SDK-based content providers seeking specific end-of-life support cancontact their local ANSYS account manager or established support representatives.

ACT delivers a simple yet powerful approach to Workbench customization with an emphasis onease of use and consistency. ACT workflows specifically accommodate the SDK user base by improvingon the external application data integration opportunities offered by the SDK.

At 19.1, ACT workflows continue to benefit from the full-featured host platform of ANSYS Workbench.Traditional coverage includes Project Schematic exposure, ANSYS product data transfer, designexploration through parameterization, and remote execution management. You will also discovernew and time-saving features made possible only through the simplicity and product portfoliocoverage of ACT.

Additionally, past SDK prerequisites of separate ANSYS installation packages, Integrated DevelopmentEnvironments, and code compilation routines no longer apply to ACT application creation. In-productdeveloper tools provide automated workflow construction, essential API discovery, applicationverification, and deployment preparation.

• For more information about ACT, see the ANSYS ACT Developer's Guide.

• For more information about migrating from SDK and External Connection Add-in to ACT, see theANSYS SDK and External Connection Add-In Migration Guide on the ACT Resources page of theANSYS customer site.

ACT App BuilderThe ACT App Builder is a standalone utility for creating ACT extensions in a visual environment. Fully in-tegrated in ANSYS ACT 19.1, you can launch the ACT App Builder from either Workbench or AIM to createand edit XML code for an ACT extension in a graphical user interface. For information, see ACT App Builder.

ACT Workflow DesignerThe ACT Workflow Designer automates workflow setup, saving you from having to create the extension'sXML definition file and IronPython scripts directly. Fully integrated in ANSYS ACT 19.1, this lightweightintegration makes creating a custom task group and tasks a quick and interactive process. For more inform-ation, see ACT Workflow Designer in the ACT Customization Guide for Workbench.



http://storage.ansys.com/doclinks/ansys.html?code=ACTSDKECMigration-ALU-K1a

http://storage.ansys.com/doclinks/ansys.html?code=ACTResourcesArea-ALU-K1a

ACT DocumentationThe ANSYS ACT Developer's Guide now includes an ANSYS App Store Extensions topic that describes themany free apps on the ANSYS App Store that contain source code. From the XML extension definition filesand IronPython scripts for these apps, you can copy code for pasting into your own custom ACT extensionfiles.

Mechanical Scripting Performance ImprovementsACT 19.0 added the method with Transaction(), which allows you to define the scope of the userinterface transaction so that only one refresh is performed at the end of the transaction. In earlier releases,scripting performance could be poor when using Mechanical’s Automation API to create or modify manyobjects because the user interface was refreshed after each method call. Consequently, if 100 objects werecreated or modified, the user interface was refreshed 100 times.

Sample code follows for using the method with Transaction():

with Transaction(): # create or modify many objects here contacts = ExtAPI.DataModel.Project.Model.Connections.Children[0] for contact in contacts.Children: contact.ContactType = ContactType.NoSeparation

For more information, see Tree Objects in the ACT Customization Guide for Mechanical.

Postprocessing in MechanicalACT 19.0 introduced the ability to create ACT objects in the Mechanical tree to access results for shell ele-ments, layer elements, and contacts and then display them as custom results. You use the methodsSetAllValues and NumberValuesByElement to set the result collector correctly. Using an externalexecutable, you can transparently control the instantiation of the results reader and postprocess resultswithout interfering with Mechanical. For more information, see the following topics in the ANSYS ACTCustomization Guide for Mechanical:

• Creating a Custom Stress Result on a Shell Element

• Creating a Custom Stress Result on a Layer Element

• Creating a Custom Result on a Contact

• Retrieving Mechanical Results More Efficiently


ACT

https://appstore.ansys.com/shop/ACTApps_act%20apps?f=prodversion%3d18

Chapter 4: Remote Solve Manager (RSM)

The following sections contain release information for ANSYS Remote Solve Manager 19.1:4.1. New Features and Enhancements4.2. Issues Resolved in this Release4.3. Known Issues and Limitations4.4. Deprecated Features


A new RSM Cluster Load Monitoring application is being introduced in Release 19.1 which enablesyou to retrieve and view current status information from any cluster that is integrated with RSM. Thisinformation can help you monitor cluster usage, determine available resources, and troubleshoot issues.

Use the RSM Cluster Load Monitoring application to quickly visualize the following:

• Available cores

• Available nodes

• Used/total cores per node

• Details and status of recently submitted jobs

4.2. Issues Resolved in this Release


4.3. Known Issues and Limitations

All issues and limitations known at the time of release are listed in the Known Issues and Limitationssection of the Remote Solve Manager User's Guide.

4.4. Deprecated Features

EKM has been deprecated in the 19.1 release.

The EKM Portal option has been removed as an HPC type from the RSM Configuration application.You can no longer create RSM configurations for EKM portal job submission.

Job submission to an existing EKM portal using a previously defined RSM configuration is not supported.

For more information, contact your local ANSYS account manager or ANSYS support.



http://storage.ansys.com/doclinks/ansys.html?code=rilRSM-ALU-K1a

Chapter 5: DesignXplorer

The following enhancements are available in ANSYS DesignXplorer 19.1. Unless noted otherwise, refer-enced topics are in the ANSYS DesignXplorer User's Guide.

Objectives Definable on Input Parameters in an Optimization CellIn an Optimization cell in a Design Exploration system, you can define objectives on input parametersfor any of the following optimization methods:

• Screening

• MOGA

• NLPQL

• MISQP

• ASO

• AMO

• External optimizers defined by ACT extensions

Ability to Disable Transformation and Scaling of Continuous Parameters for a Full 2nd-Order PolynomialResponse Surface

In a Response Surface cell in a Design Exploration system, setting Response Surface Type to StandardResponse Surface - Full 2nd-Order Polynomial can cause transformation type and scaling properties todisplay in two places:

• When Response Surface is selected in the Outline view, the Properties view displays Inputs Trans-formation Type and Inputs Scaling under Meta Model only if advanced properties are shown and atleast one input parameter is continuous, with or without manufacturable values. These advanced optionsapply to all continuous input parameters.

The choices for Inputs Transformation Type are Yeo-Johnson (default) and None. When Noneis selected, no transformation occurs. The Inputs Scaling check box is selected by default. Whenthis check box is cleared, no scaling occurs of the data for input parameters.

• When a continuous output parameter is selected in the Outline view, the Properties view always displaysTransformation Type under Output Settings. If advanced properties are shown, Scaling also displays.Each continuous output variable has its own transformation type and scaling properties.

The choices for Transformation Type are Yeo-Johnson, Box-Cox, and None. When None is se-lected, no transformation occurs. The Scaling check box is selected by default. When this checkbox is cleared, no scaling occurs of the data for the output parameter.



Ability to Specify Significance Level and Confidence Level for a Full 2nd-Order Polynomial ResponseSurface

In a Response Surface cell in a Design Exploration system, Significance Level and Confidence Levelare available as properties for the response surface when Response Surface Type is set to Standard Re-sponse Surface - Full 2nd-Order Polynomial and advanced options are shown.

• When Response Surface is selected in the Outline view, the Properties view displays SignificanceLevel under Meta Model. This advanced option indicates the threshold to use during model-buildingto filter significant terms of the polynomial regression. The default is 0.05. However, you can set anyvalue from 0 to 1.

• When Quality → Goodness Of Fit is selected in the Outline view, the Properties view displays Confid-ence Level under General. This advanced option is used post-modeling to assess the goodness of fit.It indicates how likely an input parameter being estimated falls within the confidence interval. The defaultis 0.95, which means that the interval is calculated so that the true value will fall within the interval 95out of 100 times. However, you can set any value between 0 and 1.

This property is used only as an input for generating an Advanced Goodness of Fit report. Becauseit is not taken into account when updating the response surface, modifying its value does notinvalidate the state of the response surface.

DesignXplorer Optimization TutorialsThe ANSYS Help now provides a new guide, ANSYS DesignXplorer Optimization Tutorials. You can stepthrough the several examples in this guide to learn how to use DesignXplorer to analyze and optimizedesign spaces.

DesignXplorer Beta Features DocumentAdditionally, the ANSYS Help provides ANSYS DesignXplorer Beta Features Documentation. This documentfocuses on how ROMs can be produced from Fluent steady analyses and used to evaluate models in 3D,allowing you to rapidly explore the variation of results. This document also describes other DesignXplorerbeta features, which are mostly advanced options.

DesignXplorer Extension Compatibility UpdatesThe following extensions were updated for compatibility with the 19.0 release:

• MATLAB Optimizers

• Response Surface Reader

Compatibility updates for the 19.1 release are in progress and will be released promptly uponcompletion.

To access DesignXplorer extensions, go to the ANSYS App Store and filter the apps available bytyping DesignXplorer in the Search Apps field and clicking the search button. To further filterthe results, you can make a selection in the Product Version field to the left.


DesignXplorer

http://www.ansys.com/About-ANSYS/ANSYS-App-Store

Chapter 6: ANSYS Viewer

The following sections contain release information for ANSYS Viewer 19.1:6.1. New Features and Enhancements6.2. Resolved Issues and Limitations6.3. Known Issues and Limitations


No enhancements were made to ANSYS Viewer.



6.3. Known Issues and Limitations

All issues and limitations known at the time of release are listed in the Known Issues and Limitationssection of the ANSYS Viewer User's Guide.



http://storage.ansys.com/doclinks/ansys.html?code=rilAnsysViewer-ALU-K1a

Part VI: ANSYS Discovery SpaceClaim

The release notes are intended to provide an overview of Release 19.1 of ANSYS Discovery SpaceClaim.

Chapter 1: Enhancements

For detailed information specific to SpaceClaim 19.1, see the ANSYS Discovery SpaceClaim 19.1 ReleaseNotes accessible via Customer Portal> Downloads> Current Release> Tools> Documentation> Release.



http://storage.ansys.com/doclinks/ansys.html?code=RN-SpaceCl-ALU-K1a

http://storage.ansys.com/doclinks/ansys.html?code=RN-SpaceCl-ALU-K1a

Part VII: ANSYS Discovery Live

The release notes are intended to provide an overview of Release 19.1 of ANSYS Discovery Live.

Chapter 1: Enhancements

For detailed information specific to ANSYS Discovery Live 19.1, see the ANSYS Discovery Live 19.1 ReleaseNotes accessible via Customer Portal> Downloads> Current Release> Tools> Documentation> Release.



http://storage.ansys.com/doclinks/ansys.html?code=RN-DiscovLive-ALU-K1a

http://storage.ansys.com/doclinks/ansys.html?code=RN-DiscovLive-ALU-K1a

Part VIII: ANSYS Discovery AIM

The following enhancements are available in Release 19.1 of ANSYS Discovery AIM. The release notesare intended to provide an overview of this product release.

Chapter 1: Advisories

In addition to any incompatibilities noted within the release notes, known non-operational behavior,errors and/or limitations at the time of release are documented in the ANSYS, Inc Known Issues andLimitations document, accessible via the ANSYS customer site (account required). First-time users of thecustomer site must register to create a password. See the ANSYS customer site for information aboutANSYS service packs, and any additional items not included in the Known Issues and Limitations document.



Chapter 2: Enhancements in ANSYS Discovery AIM Release 19.1

The following enhancements were made to ANSYS Discovery AIM Release 19.1.

2.1. Structures

The following enhancements related to structures are available in ANSYS Discovery AIM Release 19.1:

• You now have the option to enable pre-stress for modal analysis. Available from the Structural template orPhysics task, this option lets you include all structural conditions for pre-stress. Applications include pressurevessels, tanks, cables, and other thin structures where the stress state affects the modal results.

• The Modal Frequency table is now available as a result. While it's automatically created by the Structuraltemplate, you can also add it to the Results task. This table allows you to parameterize modal frequenciesand makes it easier for you to post-process frequency results.

• In Topology Optimization, you can enable design validation simulation by setting the option to automaticallysmooth the optimized shape. This option is available from the Topology Optimization template or from theShape task.

• You can now identify all contacts, joints, or springs for a selected body or bodies. You can right-click or selecta filter on the connection’s list view. In addition to identifying the connections for a selected body or bodies,you can further filter to view only common connections. This enhancement improves model setup for as-semblies with a large number of contacts, joints, or springs.

• Links now provide a list view of contacts, joints, or springs organized by behavior, in order to improvemodel setup for assemblies with a large number of contacts, joints, or springs.

• If you have a Mechanical Enterprise or CFD Enterprise license, you can transfer joints to Mechanical througha Workbench project schematic connection, which improves the workflow for simulating advanced structuralphysics. (The subscription Discovery AIM license does not support this capability.)

2.2. Magnetics

The following enhancements related to magnetics are available in ANSYS Discovery AIM Release 19.1:

• For electromagnetic post-processing, contour results are available for the vector components of magneticflux density, magnetic field intensity, and current density.

• For an electromagnetic simulation with permanent magnets, the material assignment shows the directionfor coercive force, which allows visual verification of the direction of coercive force and simplifies setup formodels with permanent magnets.

2.3. Fluids

The following enhancements related to fluids are available in ANSYS Discovery AIM Release 19.1:



• Right-mouse button shortcuts were added in fluids simulations for pressure drop, force computation (drag,lift), and mass flow to simplify the addition of common fluid results.

• Improvements were made to fluid flow template usability to guide you through the definition of multiplephysics regions (including solid regions if thermal is selected) and to provide the ability to select materialsfor each region.

• The ability to perform a guided blow molding workflow in AIM allowing for material thickness determinationand temperature distribution has been added.

• Restrictors are available for polymer extrusion to model a solid part in the flow without modifying the geo-metry or mesh.

• There is an improved weighting default for single value results with fluids.

2.4. General

The following general enhancements are available in ANSYS Discovery AIM Release 19.1:

• Physics aware meshing helps automate and simplify your problem setup. It eliminates the need for a Meshtask and instead generates an appropriate mesh automatically based on the solution fidelity slider settingand the physics inputs. For example, face sizing controls are added at nonlinear contact interfaces, meshsizing controls are defined near boundary locations for topology optimization analyses, and boundary layersare generated at wall boundaries for fluids simulations. Mesh generation occurs when you update thePhysics task, or if you select Generate Mesh from the RMB context menu on the Physics task. Only bodiesassigned to physics regions are meshed. If you prefer to do so, you still have the option to insert a Meshtask and define the mesh manually.

• A new rapid results exploration preview is now available after solving physics. You can interactively explorecommon results variables by moving and rotating the widget to review results rapidly. Additionally, youcan automatically create high fidelity results on planes of interest from the rapid results exploration view.

• You can record on-screen movements and export them to a movie file. When recording on-screen movements,the recording will include everything displayed in the Graphics window except the user interface's datapanel, Workflow view panel, and Help panel. In addition, movements in the Model Editor are not recorded.The recording will contain a static image of the last workflow task for the duration that you are working inModel Editor.

• Improvements have been made to the Connect to Discovery Live template. Moment, frictionless support,mass flow, and heat flow boundary conditions are now transferred from Discovery Live to AIM.


Enhancements in ANSYS Discovery AIM Release 19.1

Chapter 3: Limitations

The Known Issues and Limitations document is accessible via the ANSYS customer site (account required).Via Knowledge Resources> Online Documentation, open the General section to view the current KnownIssues and Limitations document. First-time users of the customer site must register to create a password.



ansys, inc. release notes - pharea-software.com · • ansys, inc. installation and licensing...

Documents