空间热循环系统带载降温工况参数化分析  

Parametric analysis of cooling process with load in large-space thermal cycle system

作　　者：廖达雄 张婉雨[1] 李春煜 吴静怡 LIAO Daxiong;ZHANG Wanyu;LI Chunyu;WU Jingyi(School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;China Aerodynamics Research and Development Center,Mianyang Sichuan 621000,China)

机构地区：[1]上海交通大学机械与动力工程学院,上海200240 [2]中国空气动力研究与发展中心,四川绵阳621000

出　　处：《航空动力学报》2023年第10期2305-2316,共12页Journal of Aerospace Power

基　　金：国家自然科学基金重点资助项目(51936006)。

摘　　要：用数值模拟的方法,以承载和转运飞行器模型的模型车及其温度调节室为例,进行了大空间热循环系统带载降温工况入口参数的优化与分析。优化与分析的变量包括了低温流体的入口速度、入口温度和入口角度,优化目标为获得更高的模型车降温速率和温度均匀度。结果表明:模型车平均温度及温度标准差随入口速度的增大而逐渐减小,但变化率有所减缓。本研究所制定的降温策略1,即入口温度随降温时间的变化速率先快后慢,可获得最佳的降温速率和温度均匀度。入口角度对降温速率和温度均匀的影响相对较小。当入口角度变化范围处于-15°~15°时,模型车降温速率和温度均匀度基本维持不变,而在其他入口角度区间变化较大。Parameter optimization and analysis of cooling process with load in large-space thermal cycle system were carried out with numerical simulation methodology.A model car to carry and transfer the model and its temperature control chamber were taken as an example.The parameters for optimization and analysis consisted of inlet velocity,temperature and angle.The optimization was to obtain higher cooling rate and temperature uniformity.Results showed that the variation rate of average temperature and standard deviation of temperature of the model car increased with the inlet velocity,but the increment was decreased.According to the Strategy 1 proposed,in which inlet temperature decreased faster first and then slower,the optimal cooling rate and temperature uniformity could be obtained.The effect of the inlet angle on the cooling rate and temperature uniformity was less than the other two parameters.When the inlet angle varied between-15°-15°,the cooling rate and temperature uniformity of the model car barely changed,while it varied more in other angle ranges.

关 键 词：传热 瞬态过程 参数化研究 热循环系统 带载降温 

分 类 号：V216.5[航空宇航科学与技术—航空宇航推进理论与工程]