Title: Dynamic anisotropy in MHD turbulence induced by mean magnetic field,
Abstract: In this paper, we study the development of anisotropy in strong MHD
turbulence in the presence of a large scale magnetic field B 0 by analyzing the
results of direct numerical simulations. Our results show that the developed
anisotropy among the different components of the velocity and magnetic field is
a direct outcome of the inverse cascade of energy of the perpendicular velocity
components u? and a forward cascade of the energy of the parallel component u k
. The inverse cascade develops for a strong B0, where the flow exhibits a
strong vortical structure by the suppression of fluctuations along the magnetic
field. Both the inverse and the forward cascade are examined in detail by
investigating the anisotropic energy spectra, the energy fluxes, and the shell
to shell energy transfers among different scales.