微重力场中通风换热的数值研究

为在地面模拟空间站舱内的流动与换热，以两顶角集中进风，两底角集中出风的通风方式为对象，研究了微重力是条件下复杂深间内的对流换热地面相似模拟问题，采用数值分析方法，分别考察了方腔中无隔离物，有绝热隔离物，有等温隔离物以及有等温悬浮物的几种有代表性的不同情形，给出了每种情形下不同比例模型的流动与换热情况的数值模拟结果，并针对各种不同情形进行了分析说明，分析表明，集中通风方式更有利于抑制自然对流的影响。

Num erical Study of Ventilation and Heat Transferunder Micro-gravity Environment

In order to sim ulate the airflow and heattransfer in a space station cabin,num erical analyses of heat transfer and ventilation in a com plicated cabin under m icro gravity environm entare carried outin w hich cases w ith slotair inletatthe top corners andoutletin thebottom corners arediscussed. Fourrepresentative casesw hich are em pty cabinand cabins w ith adiabatic/isotherm alobstacles are studied. The num ericalresults ofheattransfer and ventilation under various m odel scales in each configuration are elucidated. The research enunciates that shot inlet is m ore effective to suppress natural convection. Even for com plicated configuration problem s, naturalconvection can be dram atically de pressed w hen the m odelsize is properly reduced. How everthe concrete m odelsize com pa ratively depends on the given configuration. As far as the slot inlet ofventilation is con cerned, the appropriate m odelscale can be chosen as 1v5 in engineering applications.