SCALAR MODEL FOR PLASMA TURBULENCE

被引:13
作者
OTTINGER, JL
CARATI, D
机构
[1] Service de Physique Statistique, Plasmas et Optique Non-Linéaire, Université Libre de Bruxelles, B-1050 Bruxelles
来源
PHYSICAL REVIEW E | 1993年 / 48卷 / 04期
关键词
D O I
10.1103/PhysRevE.48.2955
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
A shell model is proposed to study the Hasegawa-Mima equation [Phys. Fluids 21, 87 (1978)] describing the electric-potential fluctuations in microturbulent plasmas. The similarities with two-dimensional hydrodynamic turbulence are discussed. Both the direct cascade of enstrophy and the reverse cascade of energy are investigated. The power-law spectra related to these cascades as well as the fluxes and higher moments of the fluctuations are computed. These quantities appear to be in good agreement with both the usually accepted phenomenology and the multifractal model.
引用
收藏
页码:2955 / 2965
页数:11
相关论文
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