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arXiv 2101.02410math.AP
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三维轴对称电阻性MHD方程的整体适定性

On the global well-posedness of the 3D axisymmetric resistive MHD equations

Zineb Hassainia

摘要:

本文证明了具有零粘性和轴对称初值的三维磁流体动力学(MHD)方程的整体适定性。首先,我们用$ s>5/2$分析了与Sobolev算子$ H^s\times H^{s-2}$对应的问题。第二,我们解决了同样的问题,但Besov关键的双$ B_{p,1}^{3/p+1}\times B_{1,p}^{3/p-1}$,$2\leq p\leq \infty$。这种情况变得更加微妙,因为Beale-Kato-Majda准则不知道对粗糙集有效。

英文摘要:

In this paper, we prove the global well-posedness for the three-dimensional magnetohydrodynamics (MHD) equations with zero viscosity and axisymmetric initial data. First, we analyze the problem corresponding to the Sobolev regularities $ H^s\times H^{s-2}$, with $ s>5/2$. Second, we address the same problem but for the Besov critical regularities $ B_{p,1}^{3/p+1}\times B_{1,p}^{3/p-1}$, $2\leq p\leq \infty$. This case turns out to be more subtle as the Beale-Kato-Majda criterion is not known to be valid for rough regularities.

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