热科学学报（英文版）2003，Vol.12Issue(4)：294-298,5.
Configuration of Shock Waves in Two-Dimensional Overexpanded Jets
Configuration of Shock Waves in Two-Dimensional Overexpanded Jets
Masashi Kashitani 1Yutaka Yamaguchi 1Yoshiaki Miyazato 2Mitsuharu Masuda 2Kazuyasu Matsuo3
作者信息
- 1. Department of Aerospace Engineering, National Defense Academy, 1-10-20 Hashirimizu, Yokosuka, Kanagawa, 239-8686, Japan
- 2. Department of Energy and Environmental Engineering, Kyushu University, 6-1 Kasuga-Kouen, Kasuga, Fukuoka, 816-8580, Japan
- 3. Department of Mechanical Systems and Environmental Engineering, The University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0315, Japan
- 折叠
摘要
Abstract
An experimental and analytical study has been carried out to obtain the clear understanding of a shock wave transition associated with a steady two-dimensional overexpanded flow. Two-dimensional inviscid theory with respect to a shock wave reflection is used in the present study on the characteristic of shock waves. The results obtained from the flow analysis are compared with those obtained from flow visualizations. It is shown that in the region of regular reflection, the angle of an incident shock wave becomes lower than that calculated by two shock theory with an increment in the ratio pe/pb of the nozzle exit pressure pe to the back pressure pb. It is indicated that the configuration of shock waves in overexpanded jets is influenced by the divergent angle at the nozzle exit. Also it is shown from the flow visualization that a series of shock waves move into the nozzle inside with a decrease in pressure ratio pe/pb, even if the pe/pb is under overexpanded conditions.关键词
overexpanded jet/shock wave/compressible flow/supersonic nozzleKey words
overexpanded jet/shock wave/compressible flow/supersonic nozzle分类
能源科技引用本文复制引用
Masashi Kashitani,Yutaka Yamaguchi,Yoshiaki Miyazato,Mitsuharu Masuda,Kazuyasu Matsuo..Configuration of Shock Waves in Two-Dimensional Overexpanded Jets[J].热科学学报（英文版）,2003,12(4):294-298,5.
