Global strong solutions to the Cauchy problem of the planar non-resistive magnetohydrodynamic equations with large initial data

Global strong solutions to the Cauchy problem of the planar non-resistive magnetohydrodynamic equations with large initial data
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大初始数据平面非阻磁流体动力学方程柯西问题的全局强解

DOI:
10.1016/j.jde.2022.01.041
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发表时间:
2021-05
影响因子:
2.4
通讯作者:
Mingjie Li
Mingjie Li
中科院分区:
数学2区
文献类型:
--
作者:
Jinkai Li;Mingjie Li

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在本文中,我们考虑了无热导率的平面非电阻磁流体动力学方程的柯西问题,并建立了具有大量初始数据的强解的全局适定性。证明的关键部分是建立对有效粘性通量的先验估计以及新引入的由横向磁场感应的“横向有效粘性通量”矢量场。假设初始密度仅是均匀有界的且具有有限质量,特别是允许真空和密度的不连续性。
In this paper, we consider the Cauchy problem to the planar non-resistive magnetohydrodynamic equations without heat conductivity, and establish the global well-posedness of strong solutions with large initial data. The key ingredient of the proof is to establish the a priori estimates on the effective viscous flux and a newly introduced “transverse effective viscous flux” vector field inducted by the transverse magnetic field. The initial density is assumed only to be uniformly bounded and of finite mass and, in particular, the vacuum and discontinuities of the density are allowed.
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