热科学学报（英文版）2007，Vol.16Issue(1)：33-39,7.
The Effect of Non-Equilibrium Condensation on Supersonic Air Flows over Rectangular Cavities
The Effect of Non-Equilibrium Condensation on Supersonic Air Flows over Rectangular Cavities
Miah MD. Ashraful ALAM 1Md. Mahbubul ALAM 2Shigeru MATSUO 2Kenbu TERAMOTO 2Toshiaki SETOGUCHI 2Heuy Dong KIM 3Shen YU4
作者信息
- 1. Department of Mechanical Engineering, Khulna University of Engineering & Technology, Khulna-9203, Bangladesh
- 2. Department of Mechanical Engineering, Saga University, 1, Honjo-machi, Saga-shi, Saga 840-8502, Japan
- 3. School of Mechanical Engineering, College of Natural Science, Andong National University,388, Song Cheon Dong, Andong, Kyung Pook, Republic of Korea
- 4. Institute of Engineering Thermophysics, Chinese Academy of Sciences, P.O. Box 2706, Beijing 100080, China
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摘要
Abstract
Numerical simulations have been carried out for a supersonic two-dimensional flow over open, rectangular cavities (length-to-depth ratios are L/D = 1.0 and 3.0) in order to investigate the effect of non-equilibrium condensation of moist air on supersonic internal flows around the cavity for the flow Mach number 1.83 at the cavity entrance. In the present computational investigation, a condensing flow was produced by an expansion of moist air in a Laval nozzle. The computational results showed that the upstream traveling compression waves become weaker than those without the condensation. Consequently, the weaker compression waves cannot excite the shear layer strongly and amplitudes of oscillation in the cavity became smaller than those without the condensation. The occurrence of the non-equilibrium condensation in case of L/D = 1.0 affected strongly the amplitude and frequency of oscillation in the cavity compared with L/D = 3.0.关键词
compressible flow/supersonic/cavity/oscillation/non-equilibrium condensation/numerical simulationKey words
compressible flow/supersonic/cavity/oscillation/non-equilibrium condensation/numerical simulation分类
数理科学引用本文复制引用
Miah MD. Ashraful ALAM,Md. Mahbubul ALAM,Shigeru MATSUO,Kenbu TERAMOTO,Toshiaki SETOGUCHI,Heuy Dong KIM,Shen YU..The Effect of Non-Equilibrium Condensation on Supersonic Air Flows over Rectangular Cavities[J].热科学学报（英文版）,2007,16(1):33-39,7.
