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arXiv · 2109.01029

Global Axisymmetric Euler Flows with Rotation

Yan Guo·Benoit Pausader·Klaus Widmayer
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Abstract

We construct a class of global, dynamical solutions to the 3d Euler equations near the stationary state given by uniform "rigid body" rotation. These solutions are axisymmetric, of Sobolev regularity, have non-vanishing swirl and scatter linearly, thanks to the dispersive effect induced by the rotation. To establish this, we introduce a framework that builds on the symmetries of the problem and precisely captures the anisotropic, dispersive mechanism due to rotation. This enables a fine analysis of the geometry of nonlinear interactions and allows us to propagate sharp decay bounds, which is crucial for the construction of global Euler flows.

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Yan Guo, Benoit Pausader, Klaus Widmayer. 2021-09-02. Global Axisymmetric Euler Flows with Rotation. https://doi.org/10.1007/s00222-022-01145-6

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