磁流体力学的共面黎曼问题

MHD黎曼问题的求解对分析行星际扰动演化趋势和激波相互作用具有重要意义。本文基于MHD共面间断可以分解为前后向快慢激波、中心简单波和接触间断的假定,提出MHD共面黎曼问题的一种三参数迭代解法,运用该解法实现纯法向速度间断的分解,并初步探讨该解法的适用范围。

MAGNETOHYDRODYNAMICS COPLANAR RIEMANN PROBLEM

Solution of MHD Riemann problem has a signficant implication to the study of the evolutional tendency of disturbances and the:interaction between shocks in the interplanetary space.Based on the assumption that a MHD coplanar discontinuity can be decomposed into a combination of forward and reverse shocks of fast and slow modes,centrical simple waves,and contact surfaces,this paper presents a three-parameter iteration method in solving MHD coplanar Riemann problems,applies this method to implement the decomposition of pure normal velocity discontinuities,and examines preliminarily the applicability of the method..