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TsAGI Science Journal

ISSN Imprimer: 1948-2590
ISSN En ligne: 1948-2604

TsAGI Science Journal

DOI: 10.1615/TsAGISciJ.2012006112
pages 439-453

INTERACTION OF SHORT-WAVE ACOUSTIC DISTURBANCES WITH A SHOCK WAVE ON A WEDGE IN HYPERSONIC FLOW

Tatiana Vladimirovna Poplavskaya
Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences (ITAM), Institutskaya str., 4/1, Novosibirsk, 630090, Russia
Ivan Sergeevich Tsyryul'nikov
Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences (ITAM), Institutskaya str., 4/1, Novosibirsk, 630090, Russia

RÉSUMÉ

The problem of an interaction of two-dimensional monochromatic acoustic waves with a shock wave at the wedge in hypersonic inviscid flow with Mach number 21 is considered. An interaction of acoustic waves with a shock wave for the angles of incidence of acoustic disturbances in the vicinity of a critical angle in the wide range of acoustic waves is investigated numerically. It is shown that the shorter is the wave length of the acoustic disturbances, the larger the coefficients of transformations of these disturbances. This fact is in agreement with the abnormal wave amplification that was predicted by the linear theory of an interaction of disturbances with shock waves.