Theory of Film Condensation on Shock Tube Endwall behind Reflected Shock Wave.
Theory of Film Condensation on Shock Tube Endwall behind Reflected Shock Wave.
复制标题
反射激波后激波管端壁上的薄膜凝结理论。
DOI：
10.1299/kikaib.61.635
复制
发表时间：
1995
期刊：
影响因子：
--
通讯作者：
S. Fujikawa
中科院分区：
文献类型：
--
作者：
S. Fujikawa
本文研究了反射激波后激波管端壁水蒸气膜状凝结的理论。一维气体动力学方程，连同液体膜和端壁的热方程，求解奇异摄动法的第一近似。导出了液膜生长的一个简单显式近似方程。结果表明，该方程与计算结果吻合较好，误差约为3%。本理论建议，当液膜的生长速率取决于冷凝系数时，应测量蒸汽的冷凝系数（粘附概率）。该时间，这是所谓的凝聚的过渡时间，明确地在理论上的方式定义。
This paper is concerned with the theory of film condensation of vapor on a shock-tube endwall behind a reflected shock wave. One-dimensional gas dynamics equations, together with thermal equations for a liquid film and the endwall, are solved to the first approximation by the method of singular perturbation. An approximate equation of liquid film growth is derived in a simple explicit form. It is clarified that the equation agrees well with computational results with an error of about 3%. The present theory suggests that the condensation coefficient (sticking probability) of vapor should be measured during the time when the growth rate of the liquid film depends on the condensation coefficient. The time, which is called the transition time of condensation, is defined explicitly in a theoretical manner.