Abstract
Triple configurations of shock waves with negative reflection angles are considered. These configurations have been observed in quasi-steady cases of shock wave reflection from a planar wedge in real gases, while in steady cases three-shock configurations are only known to occur with positive reflection angles. Boundaries for the appearance of a three-shock configuration with a negative reflection angle in steady cases are analytically determined as dependent on the initial Mach number of the flow, angle of incidence, and adiabatic index. The formation of a three-shock configuration with a negative reflection angle in a steady flow must lead to a change in the character of the wave pattern, and under certain conditions it can lead to instability.
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Original Russian Text © L.G. Gvozdeva, S.A. Gavrenkov, 2012, published in Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 2012, Vol. 38, No. 8, pp. 39–45.
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Gvozdeva, L.G., Gavrenkov, S.A. Formation of triple shock configurations with negative reflection angle in steady flows. Tech. Phys. Lett. 38, 372–374 (2012). https://doi.org/10.1134/S1063785012040232
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DOI: https://doi.org/10.1134/S1063785012040232