Inviscid damping near the Couette flow in a channel

Abstract

We prove asymptotic stability of shear flows in a neighborhood of the Couette flow for the 2D Euler equations in the domain $\T\times[0,1]$. More precisely we prove that if we start with a small and smooth perturbation (in a suitable Gevrey space) of the Couette flow, then the velocity field converges strongly to a nearby shear flow. The vorticity, which is initially assumed to be supported in the interior of the channel, will remain supported in the interior of the channel, will be driven to higher frequencies by the linear flow, and will converge weakly to $0$ as $t\to \infty$, modulo the shear flows (zero mode in $x$).

74 pages, revised version to appear

References in corpus (4)

• Transition threshold for the 3D Couette flow in Sobolev space
• Linear inviscid damping and enhanced dissipation for the Kolmogorov flow
• Linear inviscid damping and vorticity depletion for shear flows
• Stability of the Couette flow at high Reynolds number in 2D and 3D

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