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arXiv 1111.2925math.AP
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具有一般初值的完全可压缩磁流体动力学方程组的低马赫数极限

Low Mach number limit for the full compressible magnetohydrodynamic equations with general initial data

Song Jiang, Qiangchang Ju, Fucai Li, Zhouping Xin

摘要:

在全空间$\mathbb{R}^3$中严格证明了具有一般初值的完全可压缩磁流体动力学方程组的低马赫数极限。在索伯列夫空间中,在与马赫数无关的时间区间上,得到了解的一致马赫数估计。利用已建立的一致估计和Métiver和Schochet [Arch. Ration.机械肛门158(2001),61-90],其给出声波方程的局部能量衰减。

英文摘要:

The low Mach number limit for the full compressible magnetohydrodynamic equations with general initial data is rigorously justified in the whole space $\mathbb{R}^3$. The uniform in Mach number estimates of the solutions in a Sobolev space are obtained on a time interval independent of the Mach number. The limit is proved by using the established uniform estimates and a theorem due to Métiver and Schochet [Arch. Ration. Mech. Anal. 158 (2001), 61-90] for the Euler equations that gives the local energy decay of the acoustic wave equations.

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