Space-time statistics of isotropic MHD turbulence: the role of the sweeping effect

Details Space-time statistics of isotropic MHD turbulence: the role of the sweeping effect Space-time statistics of isotropic MHD turbulence: the role of the sweeping effect

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsh51d1713d&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SH51D-1713

Physics

Plasma Physics

[7500] Solar Physics, Astrophysics, And Astronomy, [7800] Space Plasma Physics

Scientific paper

Using direct numerical simulations of three-dimensional isotropic Magnetohydrodynamics, the scaling properties of two-point and two-time correlations are investigated. A large scale forcing is imposed and, when a turbulent steady state is reached, the dominant processes in the time decorrelation of the small-scale fluctuations are studied. In particular, the role of the sweeping, due to the motion of large scale eddies, is investigated. Results are also compared with previous studies in hydrodynamics. A possible link between spatial intermittency and bursty Eulerian signals is considered as well.

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