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Compressible magnetoconvection in three dimensions: pattern formation in a strongly stratified layer

Rucklidge, A.M., Weiss, N.O., Brownjohn, D.P., Matthews, P.C. and Proctor, M.R.E. (2000) Compressible magnetoconvection in three dimensions: pattern formation in a strongly stratified layer. Journal of Fluid Mechanics, 419. pp. 283-323. ISSN 1469-7645

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Abstract

The interaction between magnetic fields and convection is interesting both because of its astrophysical importance and because the nonlinear Lorentz force leads to an especially rich variety of behaviour. We present several sets of computational results for magnetoconvection in a square box, with periodic lateral boundary conditions, that show transitions from steady convection with an ordered planform through a regime with intermittent bursts to complicated spatiotemporal behaviour. The constraints imposed by the square lattice are relaxed as the aspect ratio is increased. In wide boxes we find a new regime, in which regions with strong fields are separated from regions with vigorous convection. We show also how considerations of symmetry and associated group theory can be used to explain the nature of these transitions and the sequence in which the relevant bifurcations occur.

Item Type: Article
Copyright, Publisher and Additional Information: © 2000 Cambridge University Press.
Institution: The University of Leeds
Academic Units: The University of Leeds > Faculty of Maths and Physical Sciences (Leeds) > School of Mathematics (Leeds) > Applied Mathematics (Leeds)
Depositing User: A. M. Rucklidge
Date Deposited: 07 Feb 2006
Last Modified: 15 Jun 2014 13:16
Published Version: http://www.journals.cambridge.org/action/displayAb...
Status: Published
Refereed: Yes
Identification Number: 10.1017/S0022112000001373
URI: http://eprints.whiterose.ac.uk/id/eprint/991

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