Abstract: ThecharacteristicsofMartianatmospherewerestudied. AsimulationcalculationmoduleoftheMartianatmospheresimulationenvironmentboxwassetupbychoosingappropriatecalculationmethodcombinedwithFLUENTfluidfiniteelementcalculationsoftware. ThemodulerealizessteadyandunsteadycalculationsimulationofinteriorflowfieldundermultipleworkingconditionsofthecylindricalMartianatmosphereenvironmentsimulationdevices.ThecalculationresultswasanalyzedsoastoprovidetechnicalsupportandreferencefordesignoftheMartianatmosphereenvironmentsimulationdevice.

Key words: Martianatmosphere, rarefiedgas, fluidsimulation;environmentsimulationdevice, computationalfluiddynamics