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arXiv 2402.01581math.AP
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Landau方程的动能冲击轮廓

Kinetic shock profiles for the Landau equation

University of Wisconsin–Madison(威斯康星大学麦迪逊分校);University of California, Los Angeles(加州大学洛杉矶分校);Purdue University(普渡大学)

Dallas Albritton, Jacob Bedrossian, Matthew Novack

AI总结:

本文研究了Landau方程中弱冲击轮廓的存在,通过Maxwellian渐近状态和Rankine-Hugoniot条件揭示了动能层面激波结构的形成机制。

摘要:

气体中的物理量应在激波两侧连续变化。然而,可压缩欧拉方程所固有的物理特性不足以描述激波的宽度或结构。我们证明了动能Landau方程中弱冲击轮廓的存在,即具有Maxwellian渐近状态的行波解,其水动力学量满足Rankine-Hugoniot条件。这些解用于在动能层面捕捉弱激波的结构。以往的工作仅考虑了具有硬球和角截断势的Boltzmann方程。

英文摘要:

The physical quantities in a gas should vary continuously across a shock. However, the physics inherent in the compressible Euler equations is insufficient to describe the width or structure of the shock. We demonstrate the existence of weak shock profiles to the kinetic Landau equation, that is, traveling wave solutions with Maxwellian asymptotic states whose hydrodynamic quantities satisfy the Rankine-Hugoniot conditions. These solutions serve to capture the structure of weak shocks at the kinetic level. Previous works considered only the Boltzmann equation with hard sphere and angular cut-off potentials.

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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