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二维零压气体动力学系统的黎曼问题-3J情形
Two-dimensional Riemann problem for zero-pressure gas dynamics-three J cases
【摘要】 研究二维零压气体动力学系统带有三片常数的黎曼问题.对外波为3J的情形,借助特征分析方法,通过研究基本波的相互作用,构造了两种不同的显式解结构,一种出现了δ-激波,另一种则包含一个三角形真空区域.
【Abstract】 The Riemann problem with three initial constants for two dimensional zero-pressure gas dynamics is considered. When the exterior waves only involve 3J, by using characteristic analysis and studying interaction of elementary waves, two kinds of different configurations of solutions are explicitly constructed, one includes a delta-shock wave and the other contains vacuum in a triangle region.
【关键词】 二维零压气体动力学系统;
黎曼问题;
δ-激波;
广义Rankine-Hugoniot条件;
熵条件;
【Key words】 two-dimensional zero-pressure gas dynamics; Riemann problem; delta shock wave; generalized Rankine-Hugoniot relation; entropy condition;
【Key words】 two-dimensional zero-pressure gas dynamics; Riemann problem; delta shock wave; generalized Rankine-Hugoniot relation; entropy condition;
【基金】 国家自然科学基金(10461010);云南大学“中青年骨干教师培养计划”资助项目
- 【文献出处】 纯粹数学与应用数学 ,Pure and Applied Mathematics , 编辑部邮箱 ,2008年03期
- 【分类号】O175.29
- 【被引频次】3
- 【下载频次】111