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arXiv 2202.10053math.APphysics.flu-dyn
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Euler方程拟周期解出现的边界效应

Boundary effects on the emergence of quasi-periodic solutions for Euler equations

Zineb Hassainia, Emeric Roulley

摘要:

在本文中,我们强调的重要性的边界效应的准周期性的涡旋补丁解决方案的建设接近Rankine涡,其存在性是未知的,在整个空间中,由于共振的线性频率。利用单位圆盘上Euler方程径向膨胀不变性的缺陷,采用Nash-Moser隐函数迭代格式,证明了当Rankine涡半径属于一个合适的具有几乎全勒贝格测度的类Cantor集时,存在这种结构.

英文摘要:

In this paper, we highlight the importance of the boundary effects on the construction of quasi-periodic vortex patches solutions close to Rankine vortices and whose existence is not known in the whole space due to the resonances of the linear frequencies. Availing of the lack of invariance by radial dilation of Euler equations in the unit disc and using a Nash-Moser implicit function iterative scheme we show the existence of such structures when the radius of the Rankine vortex belongs to a suitable massive Cantor-like set with almost full Lebesgue measure.

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