Self-Similar Energy Decay in Magnetohydrodynamic Turbulence

Details Self-Similar Energy Decay in Magnetohydrodynamic Turbulence Self-Similar Energy Decay in Magnetohydrodynamic Turbulence

Oct 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997phrvl..79.2807g&link_type=abstract

Physical Review Letters, Volume 79, Issue 15, October 13, 1997, pp.2807-2810

Physics

27

Scientific paper

The self-similar decay of energy in magnetohydrodynamic flows is examined in the spirit of the Kolmogorov phenomenology while incorporating in the expression for the energy transfer to small scales the interactions between turbulent eddies and Alfvén waves due to a large-scale magnetic field. The model is parameter-free and does not rely on the existence of the several invariants of ideal MHD except energy. High-resolution numerical simulations in two dimensions confirm its validity in a way that leads as expected to a decay significantly slower than for neutral fluids.

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