TY - JOUR
T1 - Study of the weak shock wave propagating over a porous wall/cavity system
AU - Kim, H. D.
AU - Jung, S. J.
AU - Aoki, Toshiyuki
AU - Setoguchi, T.
PY - 2005/1/1
Y1 - 2005/1/1
N2 - 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.
AB - 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.
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U2 - 10.1007/s11630-005-0053-8
DO - 10.1007/s11630-005-0053-8
M3 - Article
AN - SCOPUS:30044441747
SN - 1003-2169
VL - 14
SP - 329
EP - 333
JO - Journal of Thermal Science
JF - Journal of Thermal Science
IS - 4
ER -