A logarithmically improved regularity criterion for the MHD equations in terms of one directional derivative of the pressure. Issue 12 (10th September 2017)

• Record Type: Journal Article
• Authors: Benbernou, Samia; Ragusa, Maria Alessandra; Terbeche, Mekki
• Is Part Of: Applicable analysis. Volume 96:Issue 12(2017)
• Page Start: 2140
• Page End: 2148
• Publication Date: 2017-09-10
• Subjects: MHD equations -- regularity criteria -- partial derivatives; 35Q35 -- 35B65 -- 76D05; Mathematical analysis -- Periodicals; 515
• DOI: 10.1080/00036811.2016.1207246
• Languages: English
• ISSNs: 0003-6811

Abstract

Abstract : In this paper, a logarithmically improved regularity criterion for the incompressible magnetohydrodynamics equation is established in terms of the derivative of the pressure in one direction. It is shown that if the partial derivative of the pressure satisfies the logarithmical Serrin-type condition then the solution ( u, b ) remains smooth on . Compared to the Navier–Stokes result, there is a logarithmic correction involving b in the denominator. This is an extension of earlier regularity results in the Serrin's type space with