4.4 Article

Global Well-Posedness of 3D Axisymmetric MHD System with Pure Swirl Magnetic Field

Journal

ACTA APPLICANDAE MATHEMATICAE
Volume 155, Issue 1, Pages 21-39

Publisher

SPRINGER
DOI: 10.1007/s10440-017-0143-0

Keywords

Axisymmetric; MHD; Critical spaces; Mild solutions; Littlewood-Paley Theory

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In this paper, we consider the axisymmetric MHD system with nearly critical initial data having the special structure: u(0) = u(0)(r)er + u(0)(theta)e(theta) + u(0)(z)e(z), b(0) = b(0)(theta)e(theta) We prove that, this system is globally well-posed provided the scaling-invariant norms parallel to ru(0)(theta)parallel to L infinity,parallel to r(-1)b(0)(theta)parallel to(3/2)(L), are sufficiently small.

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