{ "id": "1909.04651", "version": "v1", "published": "2019-09-10T17:50:41.000Z", "updated": "2019-09-10T17:50:41.000Z", "title": "Inviscid limit of vorticity distributions in Yudovich class", "authors": [ "Peter Constantin", "Theodore D. Drivas", "Tarek M. Elgindi" ], "comment": "15 pgs", "categories": [ "math.AP", "physics.flu-dyn" ], "abstract": "We prove that given initial data $\\omega_0\\in L^\\infty(\\mathbb{T}^2)$, forcing $g\\in L^\\infty(0,T; L^\\infty(\\mathbb{T}^2))$, and any $T>0$, the solutions $u^\\nu$ of Navier-Stokes converge strongly in $L^\\infty(0,T;W^{1,p}(\\mathbb{T}^2))$ for any $p\\in [1,\\infty)$ to the unique Yudovich weak solution $u$ of the Euler equations. A consequence is that vorticity distribution functions converge to their inviscid counterparts. As a byproduct of the proof, we establish continuity of the Euler solution map for Yudovich solutions in the $L^p$ vorticity topology. The main tool in these proofs is a uniformly controlled loss of regularity property of the linear transport by Yudovich solutions. Our results provide a partial foundation for the Miller--Robert statistical equilibrium theory of vortices as it applies to slightly viscous fluids.", "revisions": [ { "version": "v1", "updated": "2019-09-10T17:50:41.000Z" } ], "analyses": { "keywords": [ "yudovich class", "inviscid limit", "vorticity distribution functions converge", "unique yudovich weak solution", "yudovich solutions" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }