Diffusion and dispersion in magnetohydrodynamic turbulence: the influence of mean magnetic fields

Busse, A. and Mueller, W.-C. (2008) Diffusion and dispersion in magnetohydrodynamic turbulence: the influence of mean magnetic fields. Astronomische Nachrichten, 329, pp. 714-716. (doi:10.1002/asna.200811011)

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Abstract

The properties of magnetohydrodynamic (MHD) turbulence under the influence of a strong mean magnetic field are investigated from the Lagrangian viewpoint by tracking fluid particles in direct numerical simulations. The particle trajectories show characteristic bends near vortex sheets. A strong mean magnetic field leads to preferential diffusion parallel to the mean magnetic field. The two-particle relative dispersion process shows a dependence on the orientation of the initial separation vector. The relative dispersion is slowed down for initial separation vectors aligned with the mean magnetic field.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Busse, Dr Angela
Authors: Busse, A., and Mueller, W.-C.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:Astronomische Nachrichten
Publisher:Wiley
ISSN:0004-6337
ISSN (Online):1521-3994
Published Online:12 September 2008

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