Wilbur ShapiroMechanical Technology, Inc., Latham, New York

Raymond Chupp, Glenn Holle, and Thomas ScottAllison Engine Company, Indianapolis, Indiana

Numerical, Analytical, Experimental Studyof Fluid Dynamic Forces in SealsVolume 5—Description of Seal Dynamics Code DYSEALand Labyrinth Seals Code KTK

NASA/CR—2004-213199/VOL5 (Corrected Copy)

October 2004

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Wilbur ShapiroMechanical Technology, Inc., Latham, New York

Raymond Chupp, Glenn Holle, and Thomas ScottAllison Engine Company, Indianapolis, Indiana

Numerical, Analytical, Experimental Studyof Fluid Dynamic Forces in SealsVolume 5—Description of Seal Dynamics Code DYSEALand Labyrinth Seals Code KTK

NASA/CR—2004-213199/VOL5 (Corrected Copy)

October 2004

National Aeronautics andSpace Administration

Glenn Research Center

Prepared under Contract NAS3–25644

Available from

NASA Center for Aerospace Information7121 Standard DriveHanover, MD 21076

National Technical Information Service5285 Port Royal RoadSpringfield, VA 22100

Available electronically at http://gltrs.grc.nasa.gov

Document Change History

This corrected copy replaces copies printed October 2004. It contains the following changes on the cover, title page,and Report Documentation Page:

The spelling of the second author’s last name has been changed from Chubb to Chupp.The spelling of the third author’s first name has been changed from Glen to Glenn.The spelling of Allision Engine Company has been changed to Allison Engine Company.

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Numerical, Analytical, Experimental Study of Fluid Dynamic Forces in SealsVolume 5—Description of Seal Dynamics Code DYSEAL and Labyrinth Seals Code KTK

Wilbur Shapiro, Raymond Chupp, Glenn Holle, and Thomas Scott

CFD seal code; Industrial seal codes; User-friendly seal codes; Fluid-film seal codes;Clearance seal codes; Seals; Dynamics; Design; Computational analysis; Fluid forces

Unclassified -UnlimitedSubject Categories: 07, 20, and 34 Distribution: Nonstandard

Mechanical Technology, Inc. (MTI)968 Albany-Shaker RoadLatham, New York 12110

This corrected copy supercedes the original report. Wilbur Shapiro, Mechanical Technology, Inc., Latham, New York12110; Raymond Chupp, Glenn Holle, and Thomas Scott, Allison Engine Company, Indianapolis, Indiana 46206. ProjectManager, Anita D. Liang, Aeronautics Directorate, NASA Glenn Research Center, organization code 2200, 216–977–7439. Responsible person, Robert C. Hendricks, Research and Technology Directorate, NASA Glenn Research Center,organization code 5000, 216–977–7507.

The objectives of the program were to develop computational fluid dynamics (CFD) codes and simpler industrial codesfor analyzing and designing advanced seals for air-breathing and space propulsion engines. The CFD code SCISEAL iscapable of producing full three-dimensional flow field information for a variety of cylindrical configurations. Animplicit multidomain capability allow the division of complex flow domains to allow optimum use of computationalcells. SCISEAL also has the unique capability to produce cross-coupled stiffness and damping coefficients forrotordynamic computations. The industrial codes consist of a series of separate stand-alone modules designed forexpeditious parametric analyses and optimization of a wide variety of cylindrical and face seals. Coupled through aKnowledge-Based System (KBS) that provides a user-friendly Graphical User Interface (GUI), the industrial codes arePC based using an OS/2 operating system. These codes were designed to treat film seals where a clearance existsbetween the rotating and stationary components. Leakage is inhibited by surface roughness, small but stiff clearancefilms, and viscous pumping devices. The codes have demonstrated to be a valuable resource for seal development offuture air-breathing and space propulsion engines.