CustomerTrainingMaterialLtLecture7ThermalAnalysisIntroductiontoANSYSMechanicalANSYS,Inc.ProprietaryRelease13.0©2010ANSYS,Inc.Allrightsreserved.L7-1November2010IntroductiontoANSYSMechanicalChapterOverviewCustomerTrainingMaterial•Inthischapter,performingsteady-statethermalanalysesinMechanicalwillbecovered:A.GeometryB.Assemblies–SolidBodyContactC.HeatLoadsD.SolutionOptionsE.ResultsandPostprocessingF.Workshop7.1•ThecapabilitiesdescribedinthissectionaregenerallyapplicabletoANSYSDesignSpacelicensesandabove,exceptforanANSYSStructurallicense.•Note:advancedtopicsincludingthermaltransientanalysesarecoveredintheANSYSThermalAnalysistrainingcourse.ANSYS,Inc.ProprietaryRelease13.0©2010ANSYS,Inc.Allrightsreserved.L7-2November2010IntroductiontoANSYSMechanicalBasicsofSteady-StateHeatTransferCustomerTrainingMaterial•Forasteady-state(static)thermalanalysisinMechanical,thetemperatures{T}aresolvedforinthematrixbelow:[K(T)]{T}={Q(T)}•Assumptions:–Notransienteffectsareconsideredinasteady-stateanalysis–[K]canbeconstantorafunctionoftemperature–{Q}canbeconstantorafunctionoftemperatureANSYS,Inc.ProprietaryRelease13.0©2010ANSYS,Inc.Allrightsreserved.L7-3November2010IntroductiontoANSYSMechanicalBasicsofSteady-StateHeatTransferCustomerTrainingMaterial•Fourier’sLawprovidesthebasisofthepreviousequation:•Heatflowwithinasolid(Fourier’sLaw)isthebasisof[K]•Heatflux,heatflowrate,andconvectionaretreatedasboundaryconditionsonthesystem{Q}•Convectionistreatedasaboundaryconditionalthoughtemperature-dependentfilmcoefficientsarepossible•ItisimportanttoremembertheseassumptionsrelatedtoperformingthermalanalysesinMechanical.ANSYS,Inc.ProprietaryRelease13.0©2010ANSYS,Inc.Allrightsreserved.L7-4November2010IntroductiontoANSYSMechanicalA.GeometryCustomerTrainingMaterial•Inthermalanalysesallbodytypesaresupported:–Solid,surface,andlinebodies.•Linebodiescross-sectionandorientationisdefinedwithinDesignModeler.•The“PointMass”featureisnotavailabl