AirCathodeFEA：空气阴极的有限元分析

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1、Analysisofan“AirCathode”foraMicroFuelCellaFiniteElementAnalysis(FEA)usingflexPDECraigE.Nelson-ConsultantEngineerPurposeoftheAnalysis:Anelectrochemicalreactioninalongrectangularfuelcellcathodechannelisstudied.Theworkshownhereisa“reverseengineered–independentlyformulated”versionofajournalpaperpresen

2、tation:J.YiandT.Nguyen,J.Electrochem.Soc.,146(1),38(1999).Thepurposeforthisanalysiswastocheckmymodelformulationmethodologyforacomplex,multi-component,reactive-fluidicphysicalchemistrymodel,usingapreviouslysolvedexampleasmyguideandsanitycheck.Theresultspresentedhereagreeverycloselywiththosereported

3、intherefereedjournalpaper.AnalysisGeometrySolutionDomainSolutionDomainBlockingWallCatalyticallyActive“Wall”BlockingWallBlockingWallInlet:DryAirOutlet:Wet,LowO2AirNumericalExperimentResultsMassFraction–Oxygen–ContourPlotMassFraction–Oxygen–SurfacePlotMassFraction–Water–ContourPlotMassFraction–Water

4、–SurfacePlotAirandWaterVaporVelocity–HorizontalDirection-ContourPlotAirandWaterVaporVelocity–HorizontalDirection-SurfacePlotAirandWaterVaporVelocity–VerticalDirection-ContourPlotAirandWaterVaporVelocity–VerticalDirection-SurfacePlotPressure–ContourPlotPressure–ContourPlotSummaryandConclusionsAfuel

5、cellmicro“air”cathodehasbeenanalyzedbymeansofthefiniteelementmethod(FEA).Theresultscorrectlydemonstratethe“consumption”ofoxygenandthe“production”ofwaterwithinaporousregionboundedononesidebyacatalyticallyactivelayerwhereheterogeneouschemicalreactionsoccur.Thevaluesproducedbythemodelareessentiallyid

6、enticaltothosefromasimilaranalysisreportedintheliterature.Therefore,Icantrustmyownmethodsofproblemformulationandanalysisinthiscomplex“multiphysics”scenario.