大型高度-温度试验舱分布式送风流场仿真及分析  

Simulation and analysis of distributed air flow field in large altitude-temperature test chamber

作　　者：刘然[1] 周盈 王军伟[1] 邵静怡[1] 刘洋洋 Liu Ran;Zhou Ying;Wang Junwei;Shao Jingyi;Liu Yangyang(Beijing Institute of Spacecraft Environment Engineering,Beijing 100094,China)

机构地区：[1]北京卫星环境工程研究所,北京100094

出　　处：《低温工程》2020年第2期64-70,共7页Cryogenics

基　　金：北京卫星环境工程研究所自主研发课题。

摘　　要：针对大型高度-温度试验舱在低气压环境下试验空间内温度场均匀性下降的问题,通过对大型高度-温度试验舱分布式送风流场进行数值仿真及分析,研究了两种不同送风方式下低气压试验舱内的温度场变化规律。结果表明,试验舱内温度场均匀性随着环境压力的降低而下降;增加试验舱内壁辐射换热、提高流场风速,均可以提高试验舱内的温度均匀性;同样环境压力下,采用双侧送风方式比单侧送风方式的试验舱内温度场均匀性更好,但平均风速较高。在进行高度-温度试验舱设计时,需根据不同的试验需求选择不同的送风方式。The temperature field uniformity of the large altitude-temperature test chamber is reduced in a low pressure environment.Numerical simulation and analysis of the distributed air flow field of the large altitude-temperature test chamber were performed.The temperature field in the low-pressure test chamber under two different air supply modes was studied.The result shows that the temperature field uniformity in the test chamber decreases as the ambient pressure decreases.Increasing the radiation heat transfer on the inner wall of the test chamber and increasing the wind speed in the flow field can improve the temperature uniformity in the test chamber.Under the same environmental pressure,the temperature distribution in the test chamber using the double-side air supply method is better than the single-side air supply method,but the average wind speed is higher.When designing the altitude-temperature test chamber,different air supply methods need to be selected according to different test requirements.

关 键 词：高度-温度试验舱 分布式送风 流场 温度均匀性 

分 类 号：TB663[一般工业技术—制冷工程]