Weak and strong regimes of incompressible magnetohydrodynamic turbulence

被引：2
|
作者：
Gogoberidze, G. [1 ,2 ]
Mahajan, S. M. [3 ]
Poedts, S. [1 ]
机构：
[1] Katholieke Univ Leuven, Ctr Plasma Astrophys, B-3001 Heverlee, Belgium
[2] Georgian Natl Astrophys Observ, GE-0160 Tbilisi, Georgia
[3] Univ Texas Austin, Inst Fus Studies, Austin, TX 78712 USA
来源：
PHYSICS OF PLASMAS | 2009年 / 16卷 / 07期
关键词：
plasma magnetohydrodynamic waves; plasma magnetohydrodynamics; plasma turbulence; INTERSTELLAR TURBULENCE; SIMULATIONS; ANISOTROPY;
D O I：
10.1063/1.3177455
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
It is shown that in the framework of the weak turbulence theory, the autocorrelation and cascade time scales are always of the same order of magnitude. This means that, contrary to the general belief, any model of turbulence that implies a large number of collisions among wave packets for an efficient energy cascade (such as the Iroshnikov-Kraichnan model) is not compatible with the weak turbulence theory.
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页数：4
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