session01-introduction to converge

7/23/2019 Session01-Introduction to CONVERGE

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Copyright2014.ConvergentScienceInc.,Allrightsreserved.

Introduction to CONVERGETM

TrainingSlides


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WhatwillthisTrainingSessionCover

1. WhatisCONVERGE?

2. WhatmakesCONVERGEbetter?

3. WhatcanCONVERGEdo?

4. HowdoIuseCONVERGE?

5. Overview

of

the

entire

3

day

training

course.


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Pre-Processor

Solver

Post-Convert Script

Visualization Program (Line Plot or 3D)

WhatisCONVERGE

CFDModelingProgram

WhatisCFD,anyway?

Usingnumerical

methods

and

algorithms

to

solve

and

analyze

problemsinvolvingfluidflow.

InotherwordsCFDisusingthese: toturnthis: intothis:


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WhatisCONVERGE

KeyStrengthsofCONVERGE:

Automated/RuntimeMeshing

No

user

meshing!

AccuratePhysicalModels

Combustion,Turbulence,etc.

EasytousePreProcessor

Useto

set

up

geometry

+input

files

AdvancedUtilities/Tools

CHT,VOF,GeometrySealing,etc.


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WhatmakesCONVERGEbetter

AbsolutelyNOusermeshingtime

Automaticallyaddmoremesh

resolutionin

key

areas

(adaptive

meshrefinement&embedding)

Detailedchemistrywithlarge

mechanisms Stateoftheartspraymodels


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WhatmakesCONVERGEbetter

Stateoftheartturbulencemodels(LES)

Highperformance

computing(HPC)

Optimization(letthe

computerdo

the

work

wheneverpossible)

Runmorecyclesandmore

cylinderswhenever

possible


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WhatcanCONVERGEdo

SteadyStateorTransientsinglephasesimulations

Simulationswith

large,

moving/changing,and/orcomplexsurfacegeometry

Customize,repair,

or

editsurfacegeometry

Multiphaseflowsimulations(VOF,Cavitation,incompressible/compressibleflows)

ConjugateHeatTransfer(CHT)


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WhatcanCONVERGEdo

Complexmixingsimulations(Realisticturbulence)

Combustion(Dualfuel,premixed,fuelinjection)

Chemistrymechanism

reduction

Sprayandsourcemodeling

Automatedgeometryor

parameteroptimization

(GeneticAlgorithmsGAs)

UserDefinedFunctions(UDFs)


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WhatcanCONVERGEdo

2Stroke&RotaryEngines(Sealtool)

Detailedchemistry

(SAGE)

GTPowerCoupling

EngineKnock

Analysis

Simplifiedchemistry/combustion(RIF,GEquation)


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HowdoIuseCONVERGE

Workflow:

CONVERGE Studio

Prepare Geometry

Set up Input Files

Export Surface andInput Files

CONVERGE Solver

Execute Simulation(Serial or Parallel)

Run post_convert Utility

Visualize Results

CONVERGE Studio

w/ EnSight

1

2

3


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HowdoIuseCONVERGE

CONVERGEStudioWorkflow

Import *.dat or *.STLGeometry File

1

amr . i n

boundar y. i n

combust . i n

event s. i n

embedded. i n

gas. dat

i ni t i al i ze. i n

i nput s. i n

l i qui d. dat

post . i n

speci es. i n

t ur bul ence. i n

2

Import *.in & *.dat InputData Files (if available)

Repair/Prepare

Geometry3

Configure

Input Files inCase Setup

4

amr . i nboundar y. i n

combust . i n

engi ne. i n

event s. i n

embedded. i n

gas. dat

i ni t i al i ze. i ni nput s. i n

l i qui d. dat

post . i n

speci es. i n

sur f ace. dat

t urbul ence. i n

5

Export Input

Data Files


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HowdoIuseCONVERGE

Solver:RuntheCONVERGEExecutablein1of3ways:

Serial / Local machine:

Small/simple simulations

Parallel Processing(MPI/HP-MPI, etc.):

Very efficient when properlyconfigured

Cloud Processing(Remotely Hosted Servers ideal when local computing

resources are limited)


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HowdoIuseCONVERGE

Plotting&PostProcessinginCONVERGEStudio:

View spatially-averaged output

data in the Line Plottingmodule(Alternative to Gnuplot)

Features: Auto-update, changebase directory, FFT, et al.

Convert 3D output data to

visualize it in EnSight (Run post_convertutility;

then launch EnSight withinCONVERGE Studio)


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HowdoIuseCONVERGE

Alternatively,youcanrunpost_convertinTerminal/CommandLine,thenuseavisualization

programof

your

choice

to

view

your

3D

Output:

EnSight (stand-alone version)

GMV General Mesh Viewer

FieldView

Tecplot

Paraview

Or you can export theinformation to column format


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OverviewofEntire DayTrainingCourse

Day1: Sessions1+2 Introduction+CONVERGEStudioOverview

Demo1:ImportGeometryandFlagBoundaries

Sessions3+4:CaseSetup/InputFileOverview+BoundaryConditions

Activity1:ImportInputFiles&SpecifyB.C.sforInflow&OutflowBoundaries

Session5+6:RegionsandInitialization/Mapping

Demo

2:

Assign

Boundaries

to

Regions

and

Define

Initial

Conditions

Session7:MeshingGridControl

Activity2:SetupSparkPlugEmbedding&Velocity,TempAMR


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Day2: Sessions8+9 Reqmts ofaCleanSurface+SurfacePreparation

Demo3:PrepareaValveforMotion

Sessions10+11+12:Turbulence+Combustion+Spray

Activity3:SetupPortFuelInjector

Sessions13:SourceModeling

Demo4:SetupaSparkPlugEnergySource

Session14:

Executionand

Post

Processing

Activity4:ExecuteSectorSampleCase&VisualizeResultsinLinePlottingmoduleandPostProcessing3Dmodule

or

SetupaClientCaseandStartRunningtheSimulation


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Day3:VisualizeResultsofClientCaseorSectorCaseinLinePlottingmoduleand

PostProcessing3Dmodule

andasmanyofthefollowingAdvancedtopicsastimeallows:

Sealing: 2-Stroke or Wankel

Prepare Valves for Motion

LES vs RANS

CHT / Heat Transfer Mapping,

VOF

Combustion Models: RIF,G-Equation, SAGE

Mechanism Reduction

UDFs

GA Optimization

GT-POWER Coupling

Matching CFD results to

Engine Data Cut-Cell Process

Engine Knock Analysis


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session01-introduction to converge

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