ANSYS-ICEM教程ANSYS-ICEM-CFD-Introductory-SolverOutputV12

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1、Chapter5.1MeshPreparationandOutputtoSolverICEMCFDIntroductoryCourseANSYS,Inc.ProprietaryJuly2009©2009ANSYS,Inc.Allrightsreserved.5.1-1Inventory#002664SolverOutputEditMeshTrainingManualUsageofEditMeshtools•Todiagnoseandfixanyproblemsandimprovemeshquality•ToconvertelementtypesToconver

2、telementtypes•Refineand/orcoarsenmesh•Manualandautomatictools•ForimportedaswellasinternallycreatedmeshANSYS,Inc.ProprietaryJuly2009©2009ANSYS,Inc.Allrightsreserved.5.1-2Inventory#002664SolverOutputMeshChecksTrainingManual•Todiagnosemeshassociativityproblems–Errors–mostlikelytocausep

3、roblemsin:•Solvertranslation•Solverinput•Solutionconvergence/run–PossibleProblems–“Uncleansurfacemesh”•Unwantedelements•Unwantedholes/gaps•Mayresultinincorrectsolution–Cancheckanycombinationoferrors/possibleproblemsatanyonetime•Individuallyselect•ClickonErrororPossibleProblemstabswi

4、llselectalloptionsincolumn–selectingagainwilldeselectingagainwillde-selectallselectall•SetDefaultswillselectmostcommonlyseen/detrimentaldiagnostics–CheckMode•CreateSubsetsCreateSubsets–createsasubsetofelementsthatfiteachcreatesasubsetofelementsthatfiteachcriteria•Check/FixEach–offer

5、sautomaticfixingofindicatedproblemANSYS,Inc.ProprietaryJuly2009©2009ANSYS,Inc.Allrightsreserved.5.1-3Inventory#002664SolverOutputMeshChecks:MeshErrorsTrainingManual•DuplicateElements•VolumeOrientation–Elementsthatshareallnodes–Lefthandedelementsduetowithotherelementsofthesametypeinc

6、orrectconnectivity(nodeincorrectconnectivity(node•UncoveredFacesnumberingofcell)–Volumetricelementfacesthat•SurfaceOrientationsareneitherattachedtotheface–Volumeelementsthatsharetheofanothervolumetricelementofanothervolumetricelementnortoasurfaceelementsamesurfaceelement(overlap)(bo

7、undaryface)•HangingElements•MissingInternalFaces–Line(bar)elementswithafree–Volumetricelementsthatareadjacenttttoanotherofadifferentnode(nodenotsharedbyanothernode(nodenotsharedbyanotherpartwithnosurfaceelementbar)betweenthem•PenetratingElements•PeriodicProblems–Surfaceelement(s)tha

8、tintersect–Inconsis