UNSPECIFIED (2001) Feedback of a small-scale magnetic dynamo. PHYSICAL REVIEW E, 6302 (2 Part 2). -. ISSN 1063-651X

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Abstract

We develop a WKB approach to the rapid distortion theory for magnetohydrodynamic turbulence with large magnetic Prandtl number. Within this theory, we study the growth of small-scale magnetic fluctuations in a large-scale velocity field being initially a pure strain. We show that the magnetic Lorentz force excites a secondary flow in the form of counterrotating vortices on the periphery of the magnetic spot. Those vortices slow down stretching of the magnetic spot and thus provide a negative feedback for a small-scale magnetic dynamo.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Journal or Publication Title:	PHYSICAL REVIEW E
Publisher:	AMERICAN PHYSICAL SOC
ISSN:	1063-651X
Date:	January 2001
Volume:	6302
Number:	2 Part 2
Number of Pages:	8
Page Range:	-
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/12496

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