C 0, α boundary regularity for the pressure in weak solutions of the 2 d Euler equations - Archive ouverte HAL Access content directly
Journal Articles Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences Year : 2022

C 0, α boundary regularity for the pressure in weak solutions of the 2 d Euler equations

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Claude Bardos
Edriss Titi
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Abstract

The purpose of this article is to give a complete proof of a C 0 , α regularity result for the pressure for weak solutions of the two-dimensional ‘incompressible Euler equations’ when the fluid velocity enjoys the same type of regularity in a compact simply connected domain with C 2 boundary. To accomplish our result, we realize that it is compulsory to introduce a new weak formulation for the boundary condition of the pressure, which is consistent with, and equivalent to, that of classical solutions. This article is part of the theme issue ‘Scaling the turbulence edifice (part 1)’.

Dates and versions

hal-03667771 , version 1 (13-05-2022)

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Claude Bardos, Edriss Titi. C 0, α boundary regularity for the pressure in weak solutions of the 2 d Euler equations. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2022, 380 (2218), ⟨10.1098/rsta.2021.0073⟩. ⟨hal-03667771⟩
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