Sharp bounds for the resolvent of linearized Navier Stokes equations in the half space around a shear profile

Emmanuel Grenier, Toan T. Nguyen

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, we derive sharp bounds on the semigroup of the linearized incompressible Navier-Stokes equations near a stationary shear layer in the half space (R+2 or R+3), with Dirichlet boundary conditions, assuming that this shear layer in spectrally unstable for Euler equations. In the inviscid limit, due to the prescribed no-slip boundary conditions, vorticity becomes unbounded near the boundary. The novelty of this paper is to introduce boundary layer norms that capture the unbounded vorticity and to derive sharp estimates on this vorticity that are uniform in the inviscid limit.

Original languageEnglish (US)
Pages (from-to)9384-9403
Number of pages20
JournalJournal of Differential Equations
Volume269
Issue number11
DOIs
StatePublished - Nov 15 2020

All Science Journal Classification (ASJC) codes

  • Analysis
  • Applied Mathematics

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