Vanishing viscosity limit of the 2D micropolar equations for planar rarefaction wave to a Riemann problem

Vanishing viscosity limit of the 2D micropolar equations for planar rarefaction wave to a Riemann problem
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平面稀疏波二维微极方程的消失粘度极限对黎曼问题的影响

DOI:
10.1007/s00033-020-01347-z
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发表时间:
2020-07
影响因子:
2
通讯作者:
Zhang Lan
Zhang Lan
中科院分区:
数学3区
文献类型:
--
作者:
Gong Guiqiong;Zhang Lan

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研究了二维可压缩微极方程的粘性消失极限对二维Euler方程的Riemann解的影响。在本文中,分析的关键点是引入双曲波,这有助于我们获得所需的一致估计的粘度。此外,旋转项和阻尼项的适当组合也很重要,这有助于关闭基本能量估计。最后,我们得到了二维微极方程的一族光滑解,它们收敛于相应的任意强度的平面稀疏波解。
We are concerned with the vanishing viscosity limit of the 2D compressible micropolar equations to the Riemann solution of the 2D Euler equations which admit a planar rarefaction wave. In this article, the key point of the analysis is to introduce the hyperbolic wave, which helps us obtain the desired uniform estimates with respect to the viscosities. Moreover, the proper combining of rotation terms and damping term is also important, which contributes to closing the basic energy estimates. Finally, a family of smooth solutions for the 2D micropolar equations converging to the corresponding planar rarefaction wave solution with arbitrary strength is pursued.
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