发表机构
University of Oxford; School of Mathematical Sciences, Fudan University; Friedrich–Alexander–Universität Erlangen–Nürnberg; Academy of Mathematics and Systems Science, Chinese Academy of Sciences(牛津大学; 复旦大学数学科学学院; 埃尔朗根-纽伦堡大学; 中国科学院数学与系统科学研究院)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
本文针对激波管中由给定Lipschitz前导激波和初始数据确定活塞速度及流场的反问题,利用等熵欧拉方程和Oleĭnik型熵条件,提出修正的波前跟踪方案以构造激波后流场,进而确定活塞速度。
AI 中文摘要
我们分析了一个反问题,即从给定的前导激波和激波管中的初始数据来确定活塞速度及相应的流场。气体流动由等熵欧拉方程(即p-系统)描述,而前导激波的轨迹被规定为一条给定的Lipschitz曲线。在前导激波上施加Oleĭnik型熵条件下,我们发展了一种修正的波前跟踪方案来构造激波后的流场。这一构造使我们能够确定相应的活塞速度及相关的流场。
英文摘要
We analyze an inverse problem for determining the piston speed and the associated flow field from a prescribed leading shock and the initial data in a shock tube. The gas flow is described by the isentropic Euler equations (i.e., the $p$-system), while the trajectory of the leading shock is prescribed as a given Lipschitz curve. Under an Oleĭnik-type entropy condition on the leading shock, we develop a modified wavefront tracking scheme to construct the flow field behind the shock. This construction enables us to determine the corresponding piston speed and the associated flow field.
Comments30 pages, 17 figures