Numerical study of shock wave interaction in steady flows of a viscous heat-conducting gas with a low ratio of specific heats
G.V. Shoev1,2В and В M.S. Ivanov1†
1Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk, Russia
2Novosibirsk State University, Novosibirsk, Russia
E-mail: shoev@itam.nsc.ru
Keywords: three-shock configuration with a negative reflection angle, nonuniqueness of the numerical solution of the Navier–Stokes equations, transition between regular and Mach reflection, dual solution domain, viscous effects, interaction of shock waves with an expansion fan
Pages: 343–354
Abstract
Specific
features of shock wave interaction in a viscous heat-conducting gas with a low
ratio of specific heats are numerically studied. The case of the Mach reflection of shock waves with a negative
angle of the reflected wave with respect to the free-stream velocity vector is
considered, and the influence of viscosity on the flow structure is analyzed.
Various issues of nonuniqueness of the shock wave configuration for different
Reynolds numbers are discussed. Depending on the initial conditions and
Reynolds numbers, two different shock wave configurations may exist: regular
configuration interacting with an expansion fan and Mach configuration. In the dual
solution domain, a possibility of the transition from regular to the Mach
reflection of shock waves is considered.
DOI: 10.1134/S0869864316030045
|
