Abstract: We study the stationary Navier–Stokes equations in the whole plane with a compactly supported force term and with a prescribed constant spatial limit. Prior to this work, existence of solutions to this problem was only known under special symmetry and smallness assumptions. In the paper we solve the key difficulties in applying Leray’s invading domains method and, as a consequence, prove the existence of D-solutions in the whole plane for arbitrary compactly supported force. The boundary condition at infinity are verified in two different scenarios: (I) the limiting velocity is sufficiently large with respect to the external force, (II) both the total integral of force and the limiting velocity vanish. Hence, our method produces large class of new solutions with prescribed spatial limits. Moreover, we show the uniqueness of D-solutions to this problem in a perturbative regime. The main tools here are two new estimates for general Navier–Stokes solutions, which have rather simple forms. They control the difference between mean values of the velocity over two concentric circles in terms of the Dirichlet integral in the annulus between them.

Cite: Guillod J. , Korobkov M. , Ren X.
Existence and Uniqueness for Plane Stationary Navier–Stokes Flows with Compactly Supported Force
Communications in Mathematical Physics. 2023. V.397. N2. P.729-762. DOI: 10.1007/s00220-022-04504-9 WOS Scopus РИНЦ OpenAlex

Dates:

Submitted:	Dec 21, 2021
Accepted:	Aug 13, 2022
Published online:	Nov 15, 2022
Published print:	Jan 28, 2024

Identifiers:

Web of science:	WOS:000884202800002
Scopus:	2-s2.0-85141987543
Elibrary:	59799003
OpenAlex:	W4226205756

Citing:

DB	Citing
Web of science	3
Scopus	4
OpenAlex	4
Elibrary	3

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