›› 2017, Vol. 37 ›› Issue (5): 75-.doi: 10.16708/j.cnki.1000-758X.2017.0072

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Simulationresearchonoscillationcharacteristicinhighefficiencymultiplasmathruster

 NIU  Xiang, WU  Huan, LIU  Hui, YU  Da-Ren   

  1. InstituteofAdvancedPower,HarbinInstituteofTechnology,Harbin150001,China
  • Received:2017-05-04 Revised:2017-08-03 Online:2017-10-25 Published:2017-09-12

Abstract: Nowthemainnumericalsimulationmethodofhighefficiencymultiplasmathruster(HEMPT)isparticleincell.Butthismethodputshigherdemandsoncomputer.Therefore,thismethodaimsatreappearingtheoscillationphenomenoninhighefficiencymultiplasmathrusterbybuildinguponedimensionfluidmodelandstudyingtheplasmaparametersdistributionandtherelationshipbetweenthecurrentandplasmaparameters.AonedimensionfluidmodelwasbuiltupalongtwodistinguishingtypicalelectronpathsinthrustersbySimulink.Thesimulationresultsshowthattheplasmaparametersoscillationperiodisconsistentwiththatofthecurrent.Themainionizationzoneisbetweenthetwocuspedfields.Themainareawherepotentialdropsisnearthechannelexit.  

Key words: highefficiencymultiplasmathruster, onedimensionfluidmodel, oscillation;current, electronconductivity, potentialdistribution