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1、ANSYSFLUENT12.0TheoryGuideApril2009Copyrightc2009byANSYS,Inc.AllRightsReserved.NopartofthisdocumentmaybereproducedorotherwiseusedinanyformwithoutexpresswrittenpermissionfromANSYS,Inc.Airpak,MechanicalAPDL,Workbench,AUTODYN,CFX,FIDAP,FloWizard,FLUENT,GAMBIT,Iceboard,Icechip,Icem
2、ax,Icepak,Icepro,Icewave,MixSim,POLYFLOW,TGrid,andanyandallANSYS,Inc.brand,product,serviceandfeaturenames,logosandslogansareregisteredtrademarksortrademarksofANSYS,Inc.oritssubsidiarieslocatedintheUnitedStatesorothercountries.Allotherbrand,product,serviceandfeaturenamesortradem
3、arksarethepropertyoftheirrespectiveowners.CATIAV5isaregisteredtrademarkofDassaultSyst`emes.CHEMKINisaregisteredtrademarkofReactionDesignInc.PortionsofthisprogramincludematerialcopyrightedbyPathScaleCorporation2003-2004.ANSYS,Inc.iscertifiedtoISO9001:2008Seetheon-linedocumentatio
4、nforthecompleteLegalNoticesforANSYSproprietarysoftwareandthird-partysoftware.IfyouareunabletoaccesstheLegalNotice,contactANSYS,Inc.ContentsPrefaceUTM-11BasicFluidFlow1-11.1OverviewofPhysicalModelsinANSYSFLUENT.............1-21.2ContinuityandMomentumEquations...................1
5、-31.3User-DefinedScalar(UDS)TransportEquations..............1-51.3.1SinglePhaseFlow..........................1-51.3.2MultiphaseFlow...........................1-61.4PeriodicFlows................................1-71.4.1Overview...............................1-81.4.2Limitations....
6、..........................1-91.4.3PhysicsofPeriodicFlows......................1-91.5SwirlingandRotatingFlows.........................1-111.5.1OverviewofSwirlingandRotatingFlows.............1-111.5.2PhysicsofSwirlingandRotatingFlows..............1-141.6CompressibleFlows.........
7、....................1-161.6.1WhentoUsetheCompressibleFlowModel............1-171.6.2PhysicsofCompressibleFlows...................1-181.7InviscidFlows.................................1-191.7.1EulerEquations...........................1-20Release12.0cANSYS,Inc.January29,2009TOC-1CO
8、NTENTS2FlowswithRotatingReferenceFrames2-12.1Introduct
