chp02 Using the PEM Fuel Cell Model

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

2、lSection2.4:LoadingthePEMFuelCellModuleSection2.5:SettingUpthePEMFuelCellModuleSection2.6:PEMFuelCellModelingSection2.7:ModelingofCurrentCollectorsSection2.8:PEMFuelCellBoundaryConditionsSection2.9:SolutionGuidelinesforthePEMFuelCellModelSection2.10:PostprocessingthePEMFuelCellM

3、odelSection2.11:User-AccessibleFunctionsSection2.12:IV-CurveCalculationsUsingtheTextInterface2.1IntroductionTheFLUENTPEMFuelCell(PEMFC)modeliscomprisedofseveraluser-denedfunc-tions(UDFs)andagraphicaluserinterface.Thepotentialeldsaresolvedasuser-denedscalars.Theliquidwatersaturatio

4、n,s,andthewatercontent,,arealsosolvedasuser-denedscalars.Theelectrochemicalreactionsoccurringonthecatalystaremod-eledthroughvarioussourcetermswhileothermodelparametersarehandledthroughtheuserinterface.ThePEMFCmodelcanbeusedinparallelFLUENTaswell.cFluentInc.July19,20062-1UsingthePEMFu

5、elCellModel2.2GeometryDefinitionforthePEMFuelCellModelDuetothefactthatthereareanumberofdierentphysicalzonesassociatedwiththefuelcell,thefollowingregionsmustbepresentinthefuelcellmesh:Anode owchannelAnodegasdiusionlayerAnodecatalystlayerMembranelayerCathodecatalystlayerCathodegas

6、diusionlayerCathode owchannelThefollowingzoneshavetobeidentied,ifpresentinthefuelcellmesh:AnodecurrentcollectorCathodecurrentcollectorCoolantchannel2.3InstallingthePEMFuelCellModelThePEMFuelCell(PEMFC)modelisprovidedasanaddonmodulewiththestandardFLUENTlicensedsoftware.Aspeciallic

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