自然对流深冷结霜工况下湿空气流动状态实验分析

摘要

利用设计的竖直平板实验台,对自然对流深冷竖直平板结霜工况下湿空气流动状态进行了动态描述,并分析了竖直平板附近温度分布.实验结果表明:湿空气在竖直平板附近自上而下进行主流动,其余方向的湿空气汇入主流动中,且湿空气中的温度分布沿竖直平板切线方向自上而下,沿竖直平板法线方向自远处到竖直平板表面依次降低.%Flow state of natural convection moist air was dynamically described under cryogenic frosting condition using a test bench of vertical plate designed specially and the temperature distribution near the vertical plate was analyzed. The experimental results show that moist air form a top-down main flow near the vertical plate and other directions are conducted into the main stream. The temperature of moist air decreases systematically from top to bottom along the tangential direction of the vertical plate and from far to near along the normal direction of vertical plate.