Energy spectrum of turbulent fluctuations in boundary driven reduced magnetohydrodynamics

Details Energy spectrum of turbulent fluctuations in boundary driven reduced magnetohydrodynamics Energy spectrum of turbulent fluctuations in boundary driven reduced magnetohydrodynamics

2003-09-26

arxiv.org/abs/physics/0309111v1

Phys. Plasmas, 10, 3584, 2003; http://link.aip.org/link/?php/10/3584

Physics

Plasma Physics

Published in Physics of Plasmas

Scientific paper

10.1063/1.1602698

The nonlinear dynamics of a bundle of magnetic flux ropes driven by stationary fluid motions at their endpoints is studied, by performing numerical simulations of the magnetohydrodynamic (MHD) equations. The development of MHD turbulence is shown, where the system reaches a state that is characterized by the ratio between the Alfven time (the time for incompressible MHD waves to travel along the field lines) and the convective time scale of the driving motions. This ratio of time scales determines the energy spectra and the relaxation toward different regimes ranging from weak to strong turbulence. A connection is made with phenomenological theories for the energy spectra in MHD turbulence.

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