Nonlinear inviscid damping in 2D Euler

Nonlinear inviscid damping in 2D Euler

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Jacob Bedrossian , Courant Institute, NYU
Fine Hall 322

Please note different day (Friday).  We prove the global asymptotic stability of shear flows close to planar Couette flow in the 2D incompressible Euler equations. Specifically, given an initial perturbation of the Couette flow which is small in a suitable regularity class we show that the velocity converges strongly in L2 to another shear flow which is not far from Couette. This strong convergence is usually referred to as "inviscid damping" and is roughly analogous to Landau damping in the Vlasov equations. Joint work in progress with Nader Masmoudi.