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Helical shell models for MHD turbulence

T. Lessinnes - D. Carati

Statistical and Plasma Physics, Université Libre de Bruxelles, CampusPlaine, CP 231, B-1050 Brussels, Belgium

Based on the helical decomposition of both the magnetic and the velocity fields, a helical shell model for MHD turbulence is introduced. It is used to study the influence of the forcing helicity on the onset of dynamo. It is shown that the well-known GOY shell model is not well adapted for such a study and that additional interactions between the shell variables have to be taken into account. Tables 3, Figs 2, Refs 25.

Magnetohydrodynamics 45, No. 2, 193-202, 2009 [PDF, 0.25 Mb]

Copyright: Institute of Physics, University of Latvia
Electronic edition ISSN 1574-0579
Printed edition ISSN 0024-998X