chp02 Using the PEM Fuel Cell Model

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

2、lModelSection2.4:LoadingthePEMFuelCellModuleSection2.5:SettingUpthePEMFuelCellModuleSection2.6:PEMFuelCellModelingSection2.7:ModelingofCurrentCollectorsSection2.8:PEMFuelCellBoundaryConditionsSection2.9:SolutionGuidelinesforthePEMFuelCellModelSection2.10:PostprocessingthePE

3、MFuelCellModelSection2.11:User-AccessibleFunctionsSection2.12:IV-CurveCalculationsUsingtheTextInterface2.1IntroductionTheFLUENTPEMFuelCell(PEMFC)modeliscomprisedofseveraluser-denedfunc-tions(UDFs)andagraphicaluserinterface.Thepotentialeldsaresolvedasuser-denedscalars.Theliqui

4、dwatersaturation,s,andthewatercontent,,arealsosolvedasuser-denedscalars.Theelectrochemicalreactionsoccurringonthecatalystaremod-eledthroughvarioussourcetermswhileothermodelparametersarehandledthroughtheuserinterface.ThePEMFCmodelcanbeusedinparallelFLUENTaswell.cFluentInc.July19,

5、20062-1UsingthePEMFuelCellModel2.2GeometryDefinitionforthePEMFuelCellModelDuetothefactthatthereareanumberofdierentphysicalzonesassociatedwiththefuelcell,thefollowingregionsmustbepresentinthefuelcellmesh:Anode owchannelAnodegasdiusionlayerAnodecatalystlayerMembranelayerCathod

6、ecatalystlayerCathodegasdiusionlayerCathode owchannelThefollowingzoneshavetobeidentied,ifpresentinthefuelcellmesh:AnodecurrentcollectorCathodecurrentcollectorCoolantchannel2.3InstallingthePEMFuelCellModelThePEMFuelCell(PEMFC)modelisprovidedasanaddonmodulewiththestandardFLUE

7、NTlicensedsoftware.AspeciallicenseisrequiredtousethePEMFCmodel.ThemoduleisinstalledwiththestandardinstallationofFLUENTinadirectorycalledaddons/fuelcells2.2inyourinstallationarea.ThePEMFCmodelconsistsofaUDFlibraryandapre-compiledschemelibrary,whichneedstobeloadedandactivatedbeforec

8、alculationscanbeperformed.2-2cFlu