fluent沸腾案例

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1、Tutorial:HeatandMassTransferwiththeMixtureModelandEvaporation-CondensationModelIntroductionThepurposeofthistutorialistodemonstratethesolutionofamultiphaseprobleminvolv-ingheatandmasstransferusingthemixturemultiphasemodelalongwithEvaporation-Condensationmodel.Thistutori

2、aldemonstrateshowtodothefollowing:UsethemixturemodelinANSYSFLUENTtosolveamixturemultiphaseproblem.UseEvaporation-CondensationmodelSolvethecaseusingappropriatesolversettings.Postprocesstheresultingdata.PrerequisitesThistutorialiswrittenwiththeassumptionthatyouhaveco

3、mpletedTutorial1fromtheANSYSFLUENT13.0TutorialGuide,andthatyouarefamiliarwiththeANSYSFLUENTnavigationpaneandmenustructure.Somestepsinthesetupandsolutionprocedurewillnotbeshownexplicitly.Inthistutorialyouwillusethemixturemultiphasemodel.Thistutorialwillnotcoverthemechan

4、icsofusingthismodel.Instead,itwillfocusontheapplicationofthemodeltosolveamixturemultiphaseprobleminvolvingheatandmasstransfer.FormoreinformationrefertoSection26.4SettingUptheMixtureModelintheANSYSFLUENT13.0User'sGuide.ProblemDescriptionTheproblemtobesolvedinthistutoria

5、lisshowninFigure1.Initially,thecontainercontainswater(theprimaryphase)atatemperatureneartheboilingpoint(372K).Thecenterportionofthebottomwallofthecontainerisatatemperatureof573K,whichishigherthantheboilingtemperature.Becauseofconduction,thetemperatureofthe uidnearthisw

6、allwillincreasebeyondthesaturationtemperature(373K).Vaporbubbleswillformandriseduetobuoyancy,establishingapatternsimilartoabubblecolumnwithvaporescapingatthetopandwaterrecirculatinginthecontainer.cANSYS,Inc.March8,20111HeatandMassTransferwiththeMixtureModelFigure1:Prob

7、lemSpecicationPreparation1.Copythemeshle(boil.msh.gz)totheworkingfolder.2.UseFLUENTLaunchertostartthe2DversionofANSYSFLUENT.FormoreinformationaboutFLUENTLauncherseeSection1.1.2StartingANSYSFLU-ENTUsingFLUENTLauncherintheANSYSFLUENT13.0User'sGuide.3.EnableDouble-Preci

8、sionintheOptionslist.Note:TheDisplayOptionsareenabledbydefault.Therefore,afteryoureadinthemesh,itwillbedisplayedinthe