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1、Vacuum108(2014)49e55ContentslistsavailableatScienceDirectVacuumjournalhomepage:www.elsevier.com/locate/vacuumThermalanalysisoftheHallthrusterinvacuumaa,*abLiYan,PingyangWang,HuaOuyang,XiaoluKangaSchoolofMechanicalEngineering,ShanghaiJiaotongUniversity,800DongchuangRoad,Shanghai200240,ChinabShanghai
2、InstituteofSpacePropulsion,Shanghai200233,ChinaarticleinfoabstractArticlehistory:Forobtainingtheheatfluxdistributionsofthechannelwallandanodedirectly,aplasmaenergyReceived30December2013depositionmodelisdevelopedthroughanalyzingoftheenergyexchangeofpotentialenergy,thermalReceivedinrevisedformenergy,k
3、ineticenergy,andionizationenergyduringtheparticleewallinteraction.Andtheenergy8May2014depositiononthewallisobtainedbycouplingtheenergydepositionmodeltothePIC/MCC/DSMChybridAccepted9May2014methodwhichisusedforflowfieldsimulation.ThethermalcharacteristicoftheHallthrusterisAvailableonline22May2014calcul
4、atedbycombiningheatconductionandradiationwiththecalculatedheatfluxofthechannelwall.Toexaminetheinfluenceofdifferentheatfluxdistributionstylesofthewallonthetemperaturefield,Keywords:thermaldistributionofHallthrusteriscalculatedwiththeaxiallylineardistributionofheatflux,whichisHallthrusterPIC/MCC/DSMCalwa
5、ysusedintheliterature.ThelinearheatfluxisassumedundertheconditionofthesametotalheatThermalanalysisfluxwiththePIC/MCC/DSMCcalculatedflux.TheresultsindicatethattheenergydepositionontheEnergydepositionchannelwallreachesitsmaximumattheionizationzonefirstandthenreducesattheexitzone.Theenergydepositionontoth
6、eanodeissmallatthetwoendsandreachesmaximumatthemiddlezonealongtheradialdirection.ThetemperatureresultsshowthatthehightemperatureisattheionizationzoneunderthePIC/MCC/DSMCfluxcondition,whereasitislocatedattheexitzoneunderthelinearfluxcondition.Comparingtheresultsofthecalculationwiththemeasuredtemperatu
7、redata,thetempera-turewiththePIC/MCC/DSMCheatfluxboundaryconditionisfoundtohavebetteragreementwiththemeasureddata.©2014ElsevierLtd.Allrightsreserved.1.IntroductionInmostexperimentalworksdedicatedtothethermal
