Physics – Plasma Physics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsh42b..05m&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SH42B-05
Physics
Plasma Physics
[2149] Interplanetary Physics / Mhd Waves And Turbulence, [2164] Interplanetary Physics / Solar Wind Plasma, [7833] Space Plasma Physics / Mathematical And Numerical Techniques, [7863] Space Plasma Physics / Turbulence
Scientific paper
Reduced MHD (RMHD) can be derived both from full MHD with a strong mean magnetic field, and from gyrokinetics at long wavelengths. The latter especially means RMHD is a useful system of equations for modelling the turbulence in the Solar Wind. It has been known for a while that RMHD turbulence is anisotropic with respect to the direction of the local mean magnetic field. Here, we present new results on the three-dimensional anisotropy of the turbulence, and show that there is a second important physical direction for the anisotropy of the turbulence. We compare the scaling of the 3D anisotropy in our simulations to various theoretical predictions, and to observations of turbulence in the solar wind inertial range. We also present new results on the anisotropy and scale-dependent alignment of fluctuations in simulated imbalanced reduced MHD turbulence.
Chen Christine H.
Horbury Tim S.
Mallet Alain
Schekochihin Alexander A.
Wicks Robert T.
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