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Feedback of a small-scale magnetic dynamo
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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 | ||||
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Subjects: | Q Science > QC Physics | ||||
Journal or Publication Title: | PHYSICAL REVIEW E | ||||
Publisher: | AMERICAN PHYSICAL SOC | ||||
ISSN: | 1063-651X | ||||
Official Date: | January 2001 | ||||
Dates: |
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Volume: | 6302 | ||||
Number: | 2 Part 2 | ||||
Number of Pages: | 8 | ||||
Page Range: | - | ||||
Publication Status: | Published |
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