MERGING OF MHD OBLIQUE SHOCKS
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摘要: 本文讨论磁流体快、慢激波的汇合作用规律,主要结论如下:(1)两个前向快激波汇合之后,形成一更强的前向快激波,尾随一前向慢稀疏波、一正接触间断(后侧密度大于前侧)、一后向慢激波和一后向快稀疏浚。(2)两个前向慢激波汇合之后,形成一更强的前向慢激波,尾随一正接触间断、一后向慢稀疏波和一后向快激波2在前向慢激波前方出现一前向快波,它或为稀疏浚(中、小激波角情况),或为激波(大激波角情况).(3)前向快激波会追上前向慢激波而发生汇合,之后互换位置且强度减弱,尾随一正接触间断和一后向稀疏波对。Abstract: This paper discusses.the merging of fast and slow MHD shocks.The main conclusions are as follows.(1)Merging of two forward fast shocks forms a stronger forward fast shock, followed by a forward slow rarefaction wave,a positive contact surface(with a larger density at the rear),a reverse slow shock,and a reverse fast rarefaction wave.(2)Merging of two forward slow shocks forms a stronger forward slow shock, followed by a positive contact surface,a reverse slow rarefaction wave, and a reverse fast shock.Aforward fast wave appears in front of the forward slow shock,being either a rarefaction wave for moderate shock angle case or a shock for large shock angle case.(3)Aforward fast shock will catch up with a forward slow shock.As a result,the two shocks exchange places andreduce in strength, followed by a positive contact surface and a pair of reverse rarefaction waves.
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Key words:
- MHD shock /
- Shock merging
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