The Effect of Non-Equilibrium Condensation on Supersonic Air Flows over Rectangular Cavities

被引:0
|
作者
Miah MD.Ashraful ALAM
Md.Mahbubul ALAM
Shigeru MATSUO
Kenbu TERAMOTO
Toshiaki SETOGUCHI
Heuy Dong KIM
机构
[1] Bangladesh
[2] Saga-shi
[3] College of Natural Science
[4] Japan
[5] School of Mechanical Engineering
[6] Kyung Pook
[7] Honjo-machi
[8] Andong National University
[9] Department of Mechanical Engineering Khulna University of Engineering & Technology
[10] Republic of Korea
[11] Khulna-9203
[12] Song Cheon Dong
[13] Saga 840-8502
[14] Saga University
关键词
compressible flow; supersonic; cavity; oscillation; non-equilibrium condensation; numerical simulation;
D O I
暂无
中图分类号
V211.24 [空气动力学特性];
学科分类号
摘要
Numerical simulations have been carried out for a supersonic two-dimensional flow over open,rectangular cavi-ties(length-to-depth ratios are L/D=1.0 and 3.0)in order to investigate the effect of non-equilibrium condensa-tion of moist air on supersonic internal flows around the cavity for the flow Mach number 1.83 at the cavity en-trance.In the present computational investigation,a condensing flow was produced by an expansion of moist airin a Laval nozzle.The computational results showed that the upstream traveling compression waves becomeweaker than those without the condensation.Consequently,the weaker compression waves cannot excite theshear layer strongly and amplitudes of oscillation in the cavity became smaller than those without the condensa-tion.The occurrence of the non-equilibrium condensation in case of L/D=1.0 affected strongly the amplitude andfrequency of oscillation in the cavity compared with L/D=3.0.
引用
收藏
页码:33 / 39
页数:7
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