航天器温度场的蒙特卡罗法计算

将蒙特卡罗法与热网络法相结合来求解航天器的温度场，采用蒙特卡罗法计算热网络节点间的红外辐射网络系数和表面单元的太阳光辐射传递系数，以消除角系数计算中的不合理假设，在此基础上，编制了计算辐射传递系数和求解热网络方程组的计算软件；结合由NEVADA软件得出的外热流数据，对某卫星平台的热设计方案进行了稳态温度场计算分析，经研究发现，将蒙特卡罗法与热网络法相结合对系统的复杂结构和部件表面的辐射特性有很好的适应性，但计算量较大。

Calculation of Spacecraft Temperature Field by Monte Carlo Method

The Monte Carlo method is combined with the thermal network method to solve the temperature field of a spacecraft. The radiative transfer coefficients for infrared radiation among the thermal network nodes and for solar radiation among the surface elements are calculated by the Monte Carlo method to eliminate the reasonless assumptions for the calculation of view factors. A software for calculating the radiative transfer coefficients and solving thermal network equations is developed to analyze the steady state temperature field of a satellite, by which the design scheme will be determined. The incident heat flux data needed for the calculation is presented by the NEVADA code. The investigation shows that the Monte Carlo method in combination with the thermal network method is flexible to the complicated structure of a system and the radiative characteristics of element surfaces, but the calculation is relatively heavy.