Dynamic Shock Modelling: MHD With Hysteresis Resistivity and Viscosity Academic Article uri icon

abstract

  • Abstract We numerically analyze a perpendicular MHD shock using the hysteresis model, where the resistivity and viscosity are switched on and off at different steepness of the shock profile. Such behavior may be caused by current driven instabilities which are of threshold character. A compressive fluid with a simple polytropic state equation is considered. It is shown that the hysteresis behavior is responsible for the overshoot formation and weak nonstationarity of the shock profile.

publication date

  • December 1, 2002