摘要
为深入了解月球表面的热环境,根据月表红外发射率随温度变化以及太阳光反射率随入射方向变化的特点,建立了月表的多温段变反射率辐射计算模型。将该模型与月壤非稳态导热微分方程结合,并考虑日、月相对运动关系,形成了月表温度计算方法。在计算程序验证的基础上,分析了月表温度的变化规律与控制因素,比较了月海与月陆两种月表单元的温度差异。结果表明,多温段变反射率热辐射计算模型比传统的两波段热辐射计算模型能够更准确地预测月表温度及变化规律。
In order to obtain a comprehensive insight on the thermal environment of lunar surface, a thermal radiation model characterized by multi-temperature emissivity and variable reflectivity has been developed.By combining this model with the differential equation of heat conduction in lunar regolith and the orbit law of the moon,the numerical method was presented to calculate the temperature of lunar surface.After verifying the calculating code,the temperature evolvement of the lunar surface and its governing factors were analyzed,and the difference of temperature evolvement between the lunar mare and the lunar land was compared.The results showed that the new model was more accurate to predict the lunar surface temperature than the conventional two band model of thermal radiation.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2011年第1期115-118,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金项目(No.50776026
No.90816022)
关键词
月表热环境
热辐射模型
多温段发射率
变反射率
thermal environment of lunar surface
thermal radiation model
multi-temperature emissivity
variable reflectivity.
