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Abstract

Direct numerical simulations of decaying and forced magnetohydrodynamic (MHD) turbulence without and with mean magnetic field are analysed by higher-order two-point statistics. The turbulence exhibits statistical anisotropy with respect to the direction of the local magnetic field even in the case of global isotropy. A mean magnetic field reduces the parallel-field dynamics while in the perpendicular direction a gradual transition towards two-dimensional MHD turbulence is observed with k{�3/2} inertial-range scaling of the perpendicular energy spectrum. An intermittency model based on the log-Poisson approach is able to describe the observed structure function scalings.

Additional information

Authors: MÜLLER W-C, Centre for Interdisciplinary Plasma Science, Max-Planck-Institut für Plasmaphysik, Euratom Assoziation, Garching (DE);BISKAMP D, Centre for Interdisciplinary Plasma Science, Max-Planck-Institut für Plasmaphysik, Euratom Assoziation, Garching (DE);MULLER W-C, Centre for Interdisciplinary Plasma Science, Max-Planck-Institut fur Plasmaphysik, Euratom Assoziation, Garching (DE);GRAPPIN R, Observatoire de Paris-Meudon, LUTH, Meudon (FR)
Bibliographic Reference: An article published in: Physical Review E, Vol 67, 066302 (2003)
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://link.aps.org/abstract/PRE/v67/e066302
Record Number: 200316707 / Last updated on: 2003-09-03
Category: PUBLICATION
Original language: en
Available languages: en