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Asymptotic stability for the Couette flow in the 2D Euler equations · arXivDesk

1309.2035Sep 9, 2013Short, expository summary of the preprint J. Bedrossian, N. Masmoudi "Inviscid damping and the asymptotic stability of planar shear flows in the 2D Euler equations", arXiv:1306.5028

Asymptotic stability for the Couette flow in the 2D Euler equations

Jacob Bedrossian, Nader Masmoudi

Analysis of PDEs Mathematical Physics Fluid Dynamics

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Abstract

In this expository note we discuss our recent work [arXiv:1306.5028] on the nonlinear asymptotic stability of shear flows in the 2D Euler equations of ideal, incompressible flow. In that work it is proved that perturbations to the Couette flow which are small in a suitable regularity class converge strongly in $L^2$ to a shear flow which is close to the Couette flow. Enstrophy is mixed to small scales by an almost linear evolution and is generally lost in the weak limit as t -> +/- infinity. In this note we discuss the most important physical and mathematical aspects of the result and the key ideas of the proof.

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The paper addresses: Asymptotic stability for the Couette flow in the 2D Euler equations.
In this expository note we discuss our recent work [arXiv:1306.5028] on the nonlinear asymptotic stability of shear flows in the 2D Euler equations of ideal, incompressible flow.

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Author comment: Short, expository summary of the preprint J. Bedrossian, N. Masmoudi "Inviscid damping and the asymptotic stability of planar shear flows in the 2D Euler equations", arXiv:1306.5028