热科学学报（英文版）2005，Vol.14Issue(4)：329-333,5.
A Study of the Weak Shock Wave Propagating over a Porous Wall/Cavity System
A Study of the Weak Shock Wave Propagating over a Porous Wall/Cavity System
H.D.KIM 1S.J.JUNG 1T.AOKI 2T.SETOGUCHI3
作者信息
- 1. School of Mechanical Engineering. Andong National University, Songchun-dong, Andong 760-746, Korea
- 2. Department of Energy and Environmental Engineering, Kyushu University, 6-1, Kasuga-kouen, Kasuga,Fukuoka 816-8580, Japan
- 3. Department of Mechanical Engineering, Saga University, 1, Honjo, Saga 840-8502, Japan
- 折叠
摘要
Abstract
The present computational study addresses the attenuation of the shock wave propagating in a duct, using a porous wall/cavity system. In the present study, a weak shock wave propagating over the porous wall/cavity system is investigated with computational fluid dynamics. A total variation diminishing scheme is employed to solve the unsteady, two-dimensional, compressible, Navier-Stokes equations. The Mach number of an initial shock wave is changed in the range from 1.02 to 1.12. Several different types of porous wall/cavity systems are tested to investigate the passive control effects. The results show that wall pressure strongly fluctuates due to diffraction and reflection processes of the shock waves behind the incident shock wave. From the results, it is understood that for effective alleviation of tunnel impulse waves, the length of the perforated region should be sufficiently long.关键词
compressible flow/perforated wall/railway tunnel/shock waveKey words
compressible flow/perforated wall/railway tunnel/shock wave分类
数理科学引用本文复制引用
H.D.KIM,S.J.JUNG,T.AOKI,T.SETOGUCHI..A Study of the Weak Shock Wave Propagating over a Porous Wall/Cavity System[J].热科学学报（英文版）,2005,14(4):329-333,5.
