Piston Problems of Two-Dimensional Chaplygin Gas

Piston Problems of Two-Dimensional Chaplygin Gas
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二维 Chaplygin 气体的活塞问题

DOI:
10.1007/s11401-019-0164-2
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发表时间:
2019-11
影响因子:
0.5
通讯作者:
屈爱芳
屈爱芳
中科院分区:
数学4区
文献类型:
--
作者:
陈恕行;屈爱芳

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在本文中,作者研究了查普雷金气体的非定常二维欧拉系统的活塞问题。活塞的角度被允许在较大范围内变化。活塞可以被向前推进到静止气体中,或者从……被向后拉回
In this paper, the authors study the piston problem for the unsteady two-dimensional Euler system for a Chaplygin gas. The angle of the piston is allowed to vary in a wide range. The piston can be pushed forward into the static gas, or pulled back from the gas. The global existence of solution to the piston problem with any initial speed is established, and the structures of the global solutions are clearly described. The authors find that for the proceeding piston problem the front shock can be detached, attached or even adhere to the surface of the piston depending on the parameters of the flow and the piston; while for the receding problem the front rarefaction wave is always detached and the concentration will never occur.
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