Formation of triple shock configurations with negative reflection angle in steady flows
- 87 Downloads
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.
KeywordsShock Wave Mach Number Triple Point Adiabatic Index Reflection Angle
Unable to display preview. Download preview PDF.
- 1.G. G. Chernyi, Gasdynamics (Fizmatlit, Moscow, 1988), p. 424 [in Russian].Google Scholar
- 3.R. Courant and K. O. Friedrichs, Supersonic Flows and Shock Waves (Interscience, New York, 1948).Google Scholar
- 4.T. V. Bazhenova, L. G. Gvozdeva, Y. S. Lobastov, I. M. Naboko, R. G. Nemkov, and O. A. Predvoditeleva, Shock Waves in Real Gases (Tech. Rep. TT-F-58, NASA Technical Translation, 1969).Google Scholar
- 5.T. V. Bazhenova and L. G. Gvozdeva, Unsteady Interaction of Shock Waves (Nauka, Moscow, 1977) [in Russian].Google Scholar
- 9.H. F. Ludloff, On Aerodynamics of Blasts, in Advances in Applied Mechanics, Vol. 3 (Academic Press, New York, 1953).Google Scholar
- 12.L. G. Gvozdeva, Conditions of Instability of Three-Shock Configuration in Steady Flows, The 19th International Shock Interaction Symposium (ISIS-19) (Moscow, 2010).Google Scholar
- 13.S. A. Gavrenkov and L. G. Gvozdeva, Numerical Investigation of Triple Shock Configuration for Steady Cases in Real Gases, Physics of Extreme States of Matter (Chernogolovka, 2011), p. 66.Google Scholar
- 14.L. G. Gvozdeva, V. L. Borsch, and S. A. Gavrenkov, Proceesdings of the 28th Intern. Symp. on Shock Waves (Manchester, 2011).Google Scholar