Evidence of critical balance in kinetic Alfven wave turbulence simulations

被引：77

作者：

TenBarge, J. M. ^{[1
]}

Howes, G. G. ^{[1
]}

机构：

[1] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA

来源：

PHYSICS OF PLASMAS | 2012年 / 19卷 / 05期

基金：

美国国家科学基金会;

关键词：

MAGNETOHYDRODYNAMIC TURBULENCE; SOLAR-WIND; ASTROPHYSICAL GYROKINETICS; INERTIAL-RANGE; ANISOTROPY; POWER; EQUATIONS;

D O I：

10.1063/1.3693974

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 numerical simulation of kinetic plasma turbulence is performed to assess the applicability of critical balance to kinetic, dissipation scale turbulence. The analysis is performed in the frequency domain to obviate complications inherent in performing a local analysis of turbulence. A theoretical model of dissipation scale critical balance is constructed and compared to simulation results, and excellent agreement is found. This result constitutes the first evidence of critical balance in a kinetic turbulence simulation and provides evidence of an anisotropic turbulence cascade extending into the dissipation range. We also perform an Eulerian frequency analysis of the simulation data and compare it to the results of a previous study of magnetohydrodynamic turbulence simulations. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3693974]

引用

页数：8

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