Energy spectrum of turbulent fluctuations in boundary driven reduced magnetohydrodynamics | Zendy

P. Dmitruk | Zendy; Daniel O. Gómez | Zendy; W. H. Matthaeus | Zendy

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Energy spectrum of turbulent fluctuations in boundary driven reduced magnetohydrodynamics

Author(s) -

P. Dmitruk,

Daniel O. Gómez,

W. H. Matthaeus

Publication year - 2003

Publication title -

physics of plasmas

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.75

H-Index - 160

eISSN - 1089-7674

pISSN - 1070-664X

DOI - 10.1063/1.1602698

Subject(s) - physics , magnetohydrodynamics , turbulence , magnetohydrodynamic turbulence , magnetohydrodynamic drive , mechanics , magnetic energy , k omega turbulence model , classical mechanics , magnetic field , turbulence kinetic energy , quantum mechanics , magnetization

The nonlinear dynamics of a bundle of magnetic flux ropes driven bystationary fluid motions at their endpoints is studied, by performing numericalsimulations of the magnetohydrodynamic (MHD) equations. The development of MHDturbulence is shown, where the system reaches a state that is characterized bythe ratio between the Alfven time (the time for incompressible MHD waves totravel along the field lines) and the convective time scale of the drivingmotions. This ratio of time scales determines the energy spectra and therelaxation toward different regimes ranging from weak to strong turbulence. Aconnection is made with phenomenological theories for the energy spectra in MHDturbulence.Comment: Published in Physics of Plasma

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