Boundary Regularity of Weak Solutions of the Navier–Stokes Equations
Author: Choe, H.J.
Source: Journal of Differential Equations, Volume 149, Number 2, November 1998 , pp. 211-247(37)
Publisher: Academic Press
Abstract:We prove that a solution to Navier–Stokes equations is in L2(0, ∞: H2(Ω)) under the critical assumption that u∈Lr, r′, 3/r+2/r′1 with r3. A boundary L∞ estimate for the solution is derived if the pressure on the boundary is bounded. Here our estimate is local. Indeed, employing Moser type iteration and the reverse Hölder inequality, we find an integral estimate for L∞-norm of u. Moreover the solution is C1, α continuous up to boundary if the tangential derivatives of the pressure on the boundary are bounded. Then, from the bootstrap argument a local higher regularity theorem follows, that is, the velocity is as regular as the boundary data of the pressure. Copyright 1998 Academic Press.
Document Type: Research Article
Affiliations: Department of Mathematics, KAIST, Taejon, 305-701, Republic of Korea
Publication date: November 1, 1998