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Stability and bifurcation of planetary dynamo models

Published online by Cambridge University Press:  23 November 2011

E. Dormy
E. Dormy*
Affiliation:
CNRS & MAG (ENS/IPGP), Département de Physique, Ecole Normale Supérieure, 24 rue Lhomond, 75252 Paris CEDEX 05, France
*
†Email address for correspondence: dormy@phys.ens.fr
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Abstract

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Rapidly rotating dynamos, relevant to the origin of the Earth magnetic field, are difficult to model owing to the extreme parameter regimes that occur in their dynamics. Numerical models alone fail to approach the correct regime. However, progress can be achieved by combining numerical and analytical methods. This can offer a better understanding of the variety of behaviour observed near the onset of dynamo action, as seen in the recent study of Sreenivasan & Jones (J. Fluid Mech., this issue, vol. 688, 2011, pp. 5–30).

Type
Focus on Fluids
Information
Journal of Fluid Mechanics , Volume 688 , 10 December 2011 , pp. 1 - 4
Copyright
Copyright © Cambridge University Press 2011

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