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arXiv 1602.01892math.AP
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Euler-Poisson方程组超音速解的结构稳定性

Structural stability of Supersonic solutions to the Euler-Poisson system

Myoungjean Bae, Ben Duan, Jingjing Xiao, Chunjing Xie

摘要:

本文研究了半导体器件和等离子体中流体力学模型的Euler-Poisson方程组超音速解的适定性。我们首先将超音速区域的Euler-Poisson方程组转化为二阶双曲-椭圆耦合系统和几个输运方程。分析的关键成分之一是获得相关的线性化双曲-椭圆耦合系统的边值问题的适定性,这是通过一个微妙的选择乘子获得能量估计。将迭代法与双曲-椭圆方程组的估计和输运方程相结合,建立了一般情况下超声速解的非线性结构稳定性。

英文摘要:

The well-posedness for the supersonic solutions of the Euler-Poisson system for hydrodynamical model in semiconductor devices and plasmas is studied in this paper. We first reformulate the Euler-Poisson system in the supersonic region into a second order hyperbolic-elliptic coupled system together with several transport equations. One of the key ingredients of the analysis is to obtain the well-posedness of the boundary value problem for the associated linearized hyperbolic-elliptic coupled system, which is achieved via a delicate choice of multiplier to gain energy estimate. The nonlinear structural stability of supersonic solution in the general situation is established by combining the iteration method with the estimate for hyperbolic-elliptic system and the transport equations together.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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