Study of the weak shock wave propagating over a porous wall/cavity system

H. D. Kim, S. J. Jung, Toshiyuki Aoki, T. Setoguchi

Research output: Contribution to journalArticle

3 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)329-333
Number of pages5
JournalJournal of Thermal Science
Volume14
Issue number4
DOIs
Publication statusPublished - Jan 1 2005

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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