一种应用在航天回路热控系统上的二氧化碳两相冷凝器防冻设计的数值模拟

THE NUMERICAL SIMULATION OF THE ANTI-FREEZING DESIGN FOR THE CO_2 TWO-PHASE CONDENSER IN A SPACE THERMAL CONTROL LOOP

在航天回路热控系统的设计过程中,由于涉及到复杂的太空热流环境,以及真空,微重力等因素,仅仅依靠地面试验,有时难以真实模拟太空环境,此时就需要利用数值模拟的方法为设计提供参考依据。本文介绍了利用SINDA/FLUINT模拟的方法,对一种应用在主动式热控回路上的冷凝器进行流向择优设计和散热分析,得出对这种冷凝器/辐射器防冻的较优方法。

During the design of the space thermal control system, it is difficult to simulate the real space environment in the ground test because of complex space condition of the heat flux, vacuum and micro-gravity, et al. It is necessary to apply the numerical simulation to the design of the thermal control system. The paper describes the thermal analysis by using the SINDA/FLUINT for a typical condenser in an active thermal control loop. It also shows an optimization choice of the flow direction according to the numerical simulation. The result carries out a good way to anti-freeze for this kind of condenser.