| Paradoxes of magnetorotational instability and their geometrical resolution. | |
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MedLine Citation:
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PMID: 22060489 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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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. This limit of Ro_{c}=-0.802, which appears for a finite Lundquist number of S=0.618, extends the formerly known inductionless Liu limit of Ro_{c}=-0.828 valid at S=0. |
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Authors:
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Oleg N Kirillov; Frank Stefani |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-9-7 |
Journal Detail:
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Title: Physical review. E, Statistical, nonlinear, and soft matter physics Volume: 84 ISSN: 1550-2376 ISO Abbreviation: - Publication Date: 2011 Sep |
Date Detail:
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Created Date: 2011-11-8 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101136452 Medline TA: Phys Rev E Stat Nonlin Soft Matter Phys Country: - |
Other Details:
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Languages: ENG Pagination: 036304 Citation Subset: - |
Affiliation:
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Helmholtz-Zentrum Dresden Rossendorf Post Office Box 510119, D-01314 Dresden, Germany. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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