Paradoxes of magnetorotational instability and their geometrical resolution

Kirillov, Oleg and Stefani, Frank (2011) Paradoxes of magnetorotational instability and their geometrical resolution. Physical Review E, 84 (3). 036304. ISSN 1539-3755

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Official URL: http://dx.doi.org/10.1103/PhysRevE.84.036304

Abstract

Magnetorotational instability (MRI) triggers turbulence and enables outward transport of angular momentum in hydrodynamically stable accretion discs. By using the WKB approximation and methods of singular function theory, we resolve two different paradoxes of MRI that appear in the limits of infinite and vanishing magnetic Prandtl number. For the latter case, we derive a strict limit of the critical Rossby number.

Item Type: Article
Subjects: F300 Physics
G100 Mathematics
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Oleg Kirillov
Date Deposited: 23 Jan 2017 13:15
Last Modified: 23 Jan 2017 13:22
URI: http://nrl.northumbria.ac.uk/id/eprint/29277

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