AbaqusCFD培训教材

IntroductiontoAbaqus/CFDIntroductiontoAbaqus/CFDDay1•Lecture1ReviewofCFDFundamentals•Lecture2Introduction•Lecture3GettingStartedwithAbaqus/CFD•Workshop1Unsteadyflowacrossacircularcylinder•Lecture4CFDModelingTechniques–Part11IntroductiontoAbaqus/CFDDay2•Lecture5CFDModelingTechniques–Part2•Lecture6GettingStartedwithFSIUsingAbaqus/CFD•Workshop1Unsteadyflowacrossacircularcylinder(continued)•Lecture7FSIModelingTechniques•Workshop2Heattransferanalysisofacomponent-mountedelectroniccircuitboard•Lecture8PostprocessingCFD/FSIAnalyses•Workshop2Heattransferanalysisofacomponent-mountedelectroniccircuitboard(continued)IntroductiontoAbaqus/CFDLegalNoticesTheAbaqusSoftwaredescribedinthisdocumentationisavailableonlyunderlicensefromDassaultSystèmesanditssubsidiaryandmaybeusedorreproducedonlyinaccordancewiththetermsofsuchlicense.Thisdocumentationandthesoftwaredescribedinthisdocumentationaresubjecttochangewithoutpriornotice.DassaultSystèmesanditssubsidiariesshallnotberesponsiblefortheconsequencesofanyerrorsoromissionsthatmayappearinthisdocumentation.NopartofthisdocumentationmaybereproducedordistributedinanyformwithoutpriorwrittenpermissionofDassaultSystèmesoritssubsidiary.©DassaultSystèmes,2010.PrintedintheUnitedStatesofAmericaAbaqus,the3DSlogo,SIMULIAandCATIAaretrademarksorregisteredtrademarksofDassaultSystèmesoritssubsidiariesintheUSand/orothercountries.Othercompany,product,andservicenamesmaybetrademarksorservicemarksoftheirrespectiveowners.Foradditionalinformationconcerningtrademarks,copyrights,andlicenses,seetheLegalNoticesintheAbaqus6.10ReleaseNotesandthenoticesat:•ComputationalSolidMechanics(CSM)versusComputationalFluidDynamics(CFD)•CFDBasics•GoverningEquations•HeatTransferinFluidMechanics•Non-dimensionalQuantitiesinCFD•InitialandBoundaryConditions•SolutionofGoverningEquations•TurbulenceModeling7L1.3IntroductiontoAbaqus/CFDOverview•Thislectureisoptional.•ItaimstointroducethenecessaryfluiddynamicsconceptsandquantitiesthatarerelevanttotheAbaqusfunctionalitythatispresentedinthesubsequentlectures.•Ifyouarealreadyfamiliarwiththeseconcepts,thislecturemaybeomitted.ComputationalSolidMechanics(CSM)versusComputationalFluidDynamics(CFD)8L1.5IntroductiontoAbaqus/CFDCSMvs.CFDEngineeringproblemComputationaltoolsAnswersComputationalsolidmechanics(CSM)Computationalfluiddynamics(CFD)MisesstressVelocitycontoursDeformationofstructure,StructuralintegrityFlowpatternsBaffleinwindL1.6IntroductiontoAbaqus/CFDCSMvs.CFDPhysicsMaterialpropertiesComputationalmethodFrameworkBoundaryconditions,LoadsAnalysistypesGoverningequationsEquationsofmotionElasticitySourcesofnonlinearityMaterialNonlinearelasticityPlasticityMaterialdamageGeometricLargedeformationsLargerotationsStructuralinstability(buckling)BoundaryContactComputationalSolidMechanicsMethodFiniteelementDiscretizationFEmesh“Stressconcentrations”InterpolationorderModelsizesMaximum~2-3MRoutineanalysis0.5MSolutionofdiscretizedequationsDirectsolversPrimarilyLagrangianMeshdeformswithmaterialArbitraryLagrangian-Eulerian(ALE)MeshsmoothingforlargedeformationEulerianExtremedeformationcases(CEL)StaticDynamicLinearperturbation-FrequencyBoundaryconditionsDisplacement,velocity,accelerationLoadsPointanddistributedloadsBodyforcesOtherloadingContactinteractionsElasticity(linear,nonlinear)PlasticityConductivitySpecificHeatDistributedLoadsBoundaryconditionFEmesh9L1.7IntroductiontoAbaqus/CFDCSMvs.CFDPhysicsMaterialpropertiesComputationalmethodFrameworkBoundaryconditions,LoadsAnalysistypesGoverningequationsEquationofmotionNavier-Stokes(N-S)equationsIncompressibleorCompressibleSpecializedversionsStokesflowSourcesofnonlinearityN-SequationsarefundamentallynonlinearduetoadvectivetermsMaterialnonlinearity-Non-NewtonianviscosityBoundarynonlinearity-FSIComputationalFluidDynamicsMethod:FinitevolumeFinitedifferenceFiniteelementHybridmethodsDiscretization:Finitevolumemesh“Boundarylayers”TreatmentofvarioustermsinequationsModelsizesMaximum~1000MRoutineanalysis~0.5-1.5MSolutionofdiscretizedequationsIterativesolversPrimarilyEulerian(Meshisfixed)ArbitraryLagrangian-Eulerian(ALE)Fluid-structureinteractionSteady-stateTransientVelocity,pressureBCsBodyforces-Viscosity(Newtonian,Non-Newtonian)-Conductivity-SpecificHeatBoundaryconditionsCFDmeshPressure=0VelocityFarfieldNo-slipconditionL1.8IntroductiontoAbaqus/CFDCSMvs.CFD•KeydifferentiatorsFeatureComputationalsolidmechanicsComputationalfluidmechanicsPhysicsEquationsGeneralequationsofmotionEquationsofmotionreducetoincompressible/compressibleNavier-StokesequationsComputationalFrameworkLagrangian,ArbitraryLagrangian-Eulerian,EulerianEulerian,ArbitraryLagrangian-EulerianNonlinearityMaterial,geometricandbo