Novel Features of Magnetohydrodynamic Shock Wave Reflection from Perfectly-Conducting Wedge: Unsteady Reflection and β Dependence

摘要

This paper deals with the reflection of a planar magneto-hydrodynamic shock wave propagating at a gasdynamic Mach number of 2 (twice the gas-dynamic sound speed) in an applied magnetic field, colliding with a perfectly-conducting two-dimensional metallic wedge of 30 degrees. Numerically calculated results show that the reflected wave configuration in the magnetic field becomes far more complicated than the one without magnetic field; i.e. an initially plane shock wave decomposes into the fast and slow shocks which interact again with the reflected shock wave. Four types of wave interaction configurations are observed, depending upon the intensity of initial magnetic field; these can be, in general, categorized into regular and irregular reflections.