AMS02 WAKE侧散热板热系统的优化模拟

Optimization simulation of AMS02 WAKE main radiator

为了确保电子系统在AMS02运行的全过程于规定的温度范围内工作,采用热容-热阻结点网络和集总参数法,对WAKE侧散热板的暂态特性进行了热分析计算,并结合导热仿生优化原理,对高导热材料的内嵌热管进行了优化布置。模拟结果表明,沿减小温度梯度的高导热材料进化方向布置热管较增加其密度,传热更有效。当基板与高导热材料的导热系数比为1∶(1.8×105),合理布置20%面积比的热管完全可以满足散热板的温度梯度要求,并使连接在散热板上的所有电子箱和电源箱都能在规定的温度范围内工作。

In order to secure the robust operation for all electronics during AMS02 lifetime, a transient thermal analysis for WAKE main radiator was made by adopting the method of lump parameter and thermal resistor-capacitor network. Embedded axial grooved heat pipes were considered as high conductivity material to optimize the radiator temperature field by applying the biotic optimization method. The results show that better heat transfer effects are obtained by heat pipes arranged along the path of decreasing radiator temperature gradient, compared with the increasing of the area density of heat pipes. Total 20% area ratio of heat pipes to radiator can meet the operation thermal requirements of all mounted electronics and uniform the radiator temperature distribution at the 1 ： （ 1.8 × 10^5 ） heat transfer ratio of heat pipes to the foam interlayer.