摘要
温度场均匀化设计因有利于航天器的稳定高效运行而获得越来越多的重视。本文针对简化的圆柱状卫星,采用仿生优化方法对给定量的高导热材料进行优化分布,以均匀化卫星侧表面温度场。同时,本文还基于理论分析了温度场均匀化过程中卫星的导热热阻和辐射热阻的变化情况,讨论了太阳光入射角度对卫星侧表面温度场的影响。结果表明,仿生优化方法能有效均匀化温度场,但该优化结果对应的温度场的稳定性在一定程度上受太阳光入射角度影响;在温度场均匀化过程中,卫星导热热阻与辐射热阻呈下降趋势,这表明卫星侧表面的传热性能在这一过程中得到了提高。
The homogenization design of temperature field has attracted more and more attentions because it is beneficial to the stable and effective operation of spaceerafts. In this paper, the distribution of the limited high conductivity material was optimized by the bionic optimization method to homogenize the temperature field of the side surface of a simplified cylindrical satellite. At the same time, the variations of the conductive thermal resistance and the radiative thermal resistance during the homogenization were also analyzed with the entransy theory. The affection from the incident angle of the sunlight was also discussed. The results show that the bionic optimization method is effective for the homogenization design, but the stability of the temperature field corresponding to the optimization result would be affected by the incident angle of the sunlight to some extent. During the homogenization process, both the conductive thermal resistance and the radiative thermal resistance decrease. Therefore, the heat transfer performance of the side surface is improved in the process.
出处
《兵器装备工程学报》
CAS
2016年第5期1-6,共6页
Journal of Ordnance Equipment Engineering
基金
国家自然科学基金(51376101)
关键词
卫星
温度场均匀化设计
仿生优化方法
煅理论
热阻分析
satellite
homogenization design of temperature field
bionic optimization method
entransy theory
thermal resistance analysis
