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The alpha-effect in rotating convection: size matters

Published online by Cambridge University Press:  14 December 2007

DAVID W. HUGHES  and
FAUSTO CATTANEO
DAVID W. HUGHES
Affiliation:
Department of Applied Mathematics, University of Leeds, Leeds LS2 9JT, UK
FAUSTO CATTANEO
Affiliation:
Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60637, USA
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Abstract

The results of numerical simulations of convection in a rotating layer are used to compute the α-effect of mean-field electrodynamics. The computations are carried out for different system sizes. It is found that the outcomes can depend critically on the system size, and that physically meaningful results can only be obtained if the system size is large compared with the typical eddy size.

Type
Papers
Information
Journal of Fluid Mechanics , Volume 594 , 10 January 2008 , pp. 445 - 461
Copyright
Copyright © Cambridge University Press 2008

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References

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