再论磁流体共面黎曼问题

RECONSIDERATION OF MHD COPLANAR RIEMANN PROBLEM

本文证明一般磁流体共面间断D可分解为，符号上的箭头表示各分解产物的传播方向，J为接触间断，Wf包含快激波、快简单波、1→3型中间激波及第一类快合成波，Ws包含慢激波、慢简单波、2→4型中间激波及第一类慢合成波．本文同时对某些特殊间断的分解作了分析．

It is proved that a general coplanar discontinuity can be decomposed according to D→WfWsJWsWf. Here the arrow over symbol represents the propagation direction of the related outcome of decomposition, J represents the contact surface, Wf is the fast-mode wave, containing the fast shock, fast simple wave, intermediate shock of type 1→3, and the first kind of fast compound wave, and Ws is the slow-mode wave,containing the slow shock, slow simple wave, intermediate shock of type 2→4, and the first kind of slow compound wave. The decomposition of several specific discontinuities is also discussed.