›› 2016, Vol. 36 ›› Issue (3): 70-76.doi: 10.16708/j.cnki.1000-758X.2016.0031

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Numericalsimulationoflunarsoiltemperatureconsideringitsvariablethermalproperties

 LUO  Zu-Fen1, SONG  Bao-Yin1,*, , CAO  Xi2   

  1. 1CollegeofAerospaceEngineering,NanjingUniversityofAeronauticsandAstronautics,Nanjing210016,China
    2FacultyofEngineering,ShinshuUniversity,Nagano380-8553,Japan
  • Received:2015-07-31 Revised:2015-10-12 Online:2016-06-25 Published:2016-02-24

Abstract: Thethermaldesignoflunarexplorationdevicesandinstrumentsdependsonrealinformationofthethermalenvironmentofthelunarsurface.UsingthethermalanalysismoduleinANSYS,andconsideringthatthethermalconductivityofthelunarsoilvarieswithbothdensityandtemperatureandthespecificheatisafunctionoftemperature,alunarsoiltemperaturesolvingmodelwasdeveloped.Andthelunarsurfacetemperaturesatthelatitudeof26°andtheequatorwerethencalculatedrespectively.Thetemperaturedistributionofsuperficiallayersattheequatorwasalsodiscussed.Thegoodagreementofthecomputedresultsandthemeasureddatainlunarsurfacetemperaturesrevealsthatthemodelandtheselectedparametersareapplicableandreliable,besides,thefurthermatchedpredictingresultsandmeasureddatawithasomewhatmodifiedlunarsoilconductivitypartlyshowthefunctionofthemodelincalculatingthelunarsoiltemperature.Todiscussthetemperaturedistributionofsuperficiallayersattheequator,thelunarsoiltemperatureandtheheatfluxprofilesatdifferenttimeswereplotted,andtheeffectsofthelunarinnerheatfluxandtheconductivityofthelunarsoilonthesoiltemperaturewerealsoanalyzed,whichmighttheoreticallysupportthethermaldesignsforlunarexplorationdevicesorinstruments.

Key words: lunarsoiltemperature, variablethermalproperties, ANSYS, innerheatflux, thermaldesign