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arXiv 0909.1166math.AP
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欧拉方程的涡的去奇异化

Desingularization of vortices for the Euler equation

Didier Smets, Jean Van Schaftingen

摘要:

研究了平面上不可压缩Euler方程的平稳经典解的存在性,这些解近似于该方程的奇异平稳解.通过研究方程$-\eps^2 Δu^\eps=(u^\eps-q-\fracκ{2π} \log \frac{1}{\eps})_+^p$在Dirichlet边界条件下的渐近性和$q$在给定函数下的渐近性,构造了一个新的方程.我们还研究了用最小能量节块解对涡的去奇异化和旋转涡的去奇异化。

英文摘要:

We study the existence of stationary classical solutions of the incompressible Euler equation in the plane that approximate singular stationnary solutions of this equation. The construction is performed by studying the asymptotics of equation $-\eps^2 Δu^\eps=(u^\eps-q-\fracκ{2π} \log \frac{1}{\eps})_+^p$ with Dirichlet boundary conditions and $q$ a given function. We also study the desingularization of pairs of vortices by minimal energy nodal solutions and the desingularization of rotating vortices.

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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