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Turbulent 3D MHD dynamo model in spherical shells: regular oscillations of the dipolar field

By R.D. Simitev, F.H. Busse and A.G. Kosovichev


We report the results of three-dimensional numerical simulations of convection-driven dynamos in relatively thin rotating spherical shells that show a transition from an strong non-oscillatory dipolar magnetic field to a weaker regularly oscillating dipolar field. The transition is induced primarily by the effects a stress-free boundary condition. The variation of the inner to outer radius ratio is found to have a less important effect

Topics: QC
Publisher: Center for Turbulence Research, Stanford University
Year: 2010
OAI identifier: oai:eprints.gla.ac.uk:49346
Provided by: Enlighten

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