chp02 Using the PEM Fuel Cell Model

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1、Chapter2.UsingthePEMFuelCellModelTheprocedureforsettingupandsolvingPEMfuelcellproblemsisdescribedindetailinthischapter.Pleaserefertothefollowingsectionsformoreinformation:Section2.1:IntroductionSection2.2:GeometryDenitionforthePEMFuelCellModelSection2.3:Installingthe

2、PEMFuelCellModelSection2.4:LoadingthePEMFuelCellModuleSection2.5:SettingUpthePEMFuelCellModuleSection2.6:PEMFuelCellModelingSection2.7:ModelingofCurrentCollectorsSection2.8:PEMFuelCellBoundaryConditionsSection2.9:SolutionGuidelinesforthePEMFuelCellModelSection2.10

3、:PostprocessingthePEMFuelCellModelSection2.11:User-AccessibleFunctionsSection2.12:IV-CurveCalculationsUsingtheTextInterface2.1IntroductionTheFLUENTPEMFuelCell(PEMFC)modeliscomprisedofseveraluser-denedfunc-tions(UDFs)andagraphicaluserinterface.Thepotentialeldsaresolve

4、dasuser-denedscalars.Theliquidwatersaturation,s,andthewatercontent,,arealsosolvedasuser-denedscalars.Theelectrochemicalreactionsoccurringonthecatalystaremod-eledthroughvarioussourcetermswhileothermodelparametersarehandledthroughtheuserinterface.ThePEMFCmodelcanbeusedi

5、nparallelFLUENTaswell.cFluentInc.July19,20062-1UsingthePEMFuelCellModel2.2GeometryDefinitionforthePEMFuelCellModelDuetothefactthatthereareanumberofdierentphysicalzonesassociatedwiththefuelcell,thefollowingregionsmustbepresentinthefuelcellmesh:Anode owchannelAnodegasdi

6、usionlayerAnodecatalystlayerMembranelayerCathodecatalystlayerCathodegasdiusionlayerCathode owchannelThefollowingzoneshavetobeidentied,ifpresentinthefuelcellmesh:AnodecurrentcollectorCathodecurrentcollectorCoolantchannel2.3InstallingthePEMFuelCellModelThePEMFuel

7、Cell(PEMFC)modelisprovidedasanaddonmodulewiththestandardFLUENTlicensedsoftware.AspeciallicenseisrequiredtousethePEMFCmodel.ThemoduleisinstalledwiththestandardinstallationofFLUENTinadirectorycalledaddons/fuelcells2.2inyourinstallationarea.ThePEMFCmodelconsistsofaUDFlibrar

8、yandapre-compiledschemelibrary,whichneedstobeloadedandactivatedbeforecalculationscanbeperformed.2-2cFlu