Influence of inner and outer walls electromagnetic properties on the onset of a stationary dynamo

To study the onset of a stationary dynamo in the presence of inner or outer walls of various electromagnetic properties, we propose a simple 1D-model in which the flow is replaced by an alpha effect. The equation of dispersion of the problem is derived analytically. It is solved numerically for wall...

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Bibliographic Details
Published in:The European physical journal. B, Condensed matter physics Condensed matter physics, 2005-09, Vol.47 (1), p.127-135
Main Authors: AVALOS-ZUNIGA, R, PLUNIAN, F
Format: Article
Language:English
Subjects:
Applied sciences
Direct energy conversion and energy accumulation
Earth Sciences
Electrical engineering. Electrical power engineering
Electrical power engineering
Electro- and magnetofluidodynamics conversion
Exact sciences and technology
Fluid Dynamics
Geophysics
Physics
Plasma Physics
Sciences of the Universe
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Summary:To study the onset of a stationary dynamo in the presence of inner or outer walls of various electromagnetic properties, we propose a simple 1D-model in which the flow is replaced by an alpha effect. The equation of dispersion of the problem is derived analytically. It is solved numerically for walls of different thicknesses and of electric conductivity and magnetic permeability different from those of the fluid in motion. We also consider walls in the limit of infinite conductivity or permeability.
ISSN:1434-6028
1434-6036
DOI:10.1140/epjb/e2005-00294-0