Anisotropy in three-dimensional MHD turbulence

被引：0
|
作者：
Bigot, B. [1 ,2 ]
Galtier, S. [1 ]
Politano, H. [2 ]
机构：
[1] Univ Paris 11, Inst Astrophys Spatiale, UMR 8617, F-91405 Orsay, France
[2] Observ Cote Azur, Lab Cassiopee, UMR 6202, F-06304 Nice, France
来源：
ADVANCES IN TURBULENCE XI | 2007年 / 117卷
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中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
We perform numerical simulations to characterize the transition from strong to weak magnetohydrodynamic (MHD) turbulence for freely decaying incompressible flows in presence of a uniform magnetic field B-0. Due to reduction of energetic transfers along B-0, the flow anisotropy, as measured for example by Shebalin angles, increases together with B-0 intensity. At high B-0, ratios of Alfven to nonlinear turnover timescales stay below unity allowing for an Iroshnikov-Kraichnan description of anisotropic flows.
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页码：26 / 28
页数：3
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