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Communication Dans Un Congrès Année : 2011

The Spectral Structure of Anisotropic MHD Turbulence

Résumé

A new analysis of the anisotropic spectral energy distribution in incompressible magnetohydrodynamic (MHD) turbulence permeated by a strong mean magnetic field is carried out on high-resolution pseudo-spectral direct numerical simulations with large-scale isotropic forcing. In each direction in planes containing B0, starting at the forced large-scales, the spectrum exhibits an angle-dependent dissipative wavenumber kd(theta) but for k >= k0 it assumes a single theta-independent functional form F(k/kd), In particular, the scaling law is isotropic in those planes. The previous properties still hold when increasing the mean field from B0 = 5 up to B0 = 10 brms.
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Dates et versions

hal-02793770 , version 1 (05-06-2020)

Identifiants

  • HAL Id : hal-02793770 , version 1

Citer

Roland Grappin, Wolf-Christian Müller. The Spectral Structure of Anisotropic MHD Turbulence. Astronum 2010, Jun 2010, San Diego, California, United States. pp.54. ⟨hal-02793770⟩
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