超流氦相分离器临界速度计算方法与比较

摘要

超流氦在空间探测的极低温制冷系统中被广泛应用,在研究超流氦通过圆管或者狭缝时,需要分清超流氦在圆管或者狭缝中的流动状态,从而应用不同的模型来计算超流氦的制冷量.根据查阅已有的相关文献资料,列举分析不同的超流氦临界速度计算方法,然后进行比较.%Super - helium is used abroad in the cryogenic system for space explore. When studying the flow of super - heli-um in slit or cylindrical pipe, it is important to distinguish the flow state. We can compute the refrigeration capacity of super -helium according to the flow state. This paper gave several methods how to compute the critical speed of super - helium and com-pared them.