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A self-consistent treatment of the electromotive force in magnetohydrodynamics for large diffusivities

โœ Scribed by A. Courvoisier; D.W. Hughes; M.R.E. Proctor

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
91 KB
Volume
331
Category
Article
ISSN
0004-6337

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โœฆ Synopsis

Abstract

The coupled equations that describe the effect of largeโ€scale magnetic and velocity fields on forced highโ€diffusivity magnetohydrodynamic flows are investigated through an extension of mean field electrodynamics. Our results generalise those of Rรคdler & Brandenburg (2010), who consider a similar situation but assume that the effect of the Lorentz force on the momentum equation can be neglected. New mean coupling terms are shown to appear, which can lead to largeโ€scale growth of magnetic and velocity fields even when the usual aโ€effects are absent (ยฉ 2010 WILEYโ€VCH Verlag GmbH & Co. KGaA, Weinheim)

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