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

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

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008an....329..714b&link_type=abstract

Astronomische Nachrichten, Vol.329, Issue 7, p.714

Astronomy and Astrophysics

Astronomy

2

Diffusion, Magnetohydrodynamics (Mhd), Turbulence

Scientific paper

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.

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