文档介绍：.*,.*MotivationDemonstratetheuseofFluenttomodelphasechangeinheatexchangersProcessesofinterestCondensationEvaporationBoilingIllustratehowtomodelonesuchprocessthroughuseofadetailedexampleShell-and-.*OutlineProblemDescriptionShell-and-tubecondenserPurevaporcondensationNon-condensablegasesModelingApproachPorousmediumHeatandmasstransfermodelingModelImplementationUser-DefinedFunctionsandUser-DefinedMemoryResultsSteamcondenserwithnon-.*DescriptionofProblemShell-and-.*GoalsofCFDModelingCondenserperformancecharacterizedbyheatandmasstransferrateCFDallowsevaluationoffactorsaffectingheatandmasstransferincondenserTubebundleconfigurationTubearrangementNumberofpassesLocationofinletportsBafflesPressuredropVelocityfieldNon-.*FilmCondensationProcessDrivingpotentialforcondensationisthetemperaturedifferencebetweenvaporandcoolingwaterDrivingpotentialvariationcausedbyPressuredropRiseofcoolingwatertemperatureNon-.*parisonwithdetailedmodelingapproachIn2-D,O(100)-O(1000).*PorousMediumApproachRepresentationoftubebundleasporousmediumPorosityisonlyrequiredparameterPorositydefinedasratiooffluidvolumetototalvolumePdExample:staggeredtubebundlewithequilateraltriangularlayoutPorosity,b,.*--.*putationallyefficientDoesanalternate,tractable