chp02 Using the PEM Fuel Cell Model

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1、Chapter2.UsingthePEMFuelCellModelTheprocedureforsettingupandsolvingPEMfuelcellproblemsisdescribedindetailinthischapter.Pleaserefertothefollowingsectionsformoreinformation:Section2.1:IntroductionSection2.2:GeometryDenitionforthePEMFuelCellModelSection2.3:InstallingthePEMFuelCellModelSection2.4:L

2、oadingthePEMFuelCellModuleSection2.5:SettingUpthePEMFuelCellModuleSection2.6:PEMFuelCellModelingSection2.7:ModelingofCurrentCollectorsSection2.8:PEMFuelCellBoundaryConditionsSection2.9:SolutionGuidelinesforthePEMFuelCellModelSection2.10:PostprocessingthePEMFuelCellModelSection2.11:User-Access

3、ibleFunctionsSection2.12:IV-CurveCalculationsUsingtheTextInterface2.1IntroductionTheFLUENTPEMFuelCell(PEMFC)modeliscomprisedofseveraluser-denedfunc-tions(UDFs)andagraphicaluserinterface.Thepotentialeldsaresolvedasuser-denedscalars.Theliquidwatersaturation,s,andthewatercontent,,arealsosolvedasus

4、er-denedscalars.Theelectrochemicalreactionsoccurringonthecatalystaremod-eledthroughvarioussourcetermswhileothermodelparametersarehandledthroughtheuserinterface.ThePEMFCmodelcanbeusedinparallelFLUENTaswell.cFluentInc.July19,20062-1UsingthePEMFuelCellModel2.2GeometryDefinitionforthePEMFuelCellModelDue

5、tothefactthatthereareanumberofdierentphysicalzonesassociatedwiththefuelcell,thefollowingregionsmustbepresentinthefuelcellmesh:Anode owchannelAnodegasdiusionlayerAnodecatalystlayerMembranelayerCathodecatalystlayerCathodegasdiusionlayerCathode owchannelThefollowingzoneshavetobeidentied,ifpr

6、esentinthefuelcellmesh:AnodecurrentcollectorCathodecurrentcollectorCoolantchannel2.3InstallingthePEMFuelCellModelThePEMFuelCell(PEMFC)modelisprovidedasanaddonmodulewiththestandardFLUENTlicensedsoftware.AspeciallicenseisrequiredtousethePEMFCmodel.ThemoduleisinstalledwiththestandardinstallationofFL

7、UENTinadirectorycalledaddons/fuelcells2.2inyourinstallationarea.ThePEMFCmodelconsistsofaUDFlibraryandapre-compiledschemelibrary,whichneedstobeloadedandactivatedbeforecalculationscanbeperformed.2-2cFlu