Large-scale convective instability in an electroconducting medium with small-scale helicity

被引：2

作者：

Kopp, M. I. ^{[1
,2
]}

Tur, A. V. ^{[3
]}

Yanovsky, V. V. ^{[1
,2
]}

机构：

[1] Natl Acad Sci Ukraine, Inst Single Crystals, UA-61001 Kharkov, Ukraine

[2] Kharkiv State Univ, UA-61000 Kharkov, Ukraine

[3] Univ Toulouse USP, Inst Rech Astrophys & Planetol, CNRS, F-31028 Toulouse, France

来源：

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS | 2015年 / 120卷 / 04期

关键词：

DRIVEN;

D O I：

10.1134/S1063776115040081

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A large-scale instability occurring in a stratified conducting medium with small-scale helicity of the velocity field and magnetic fields is detected using an asymptotic many-scale method. Such a helicity is sustained by small external sources for small Reynolds numbers. Two regimes of instability with zero and nonzero frequencies are detected. The criteria for the occurrence of large-scale instability in such a medium are formulated.

引用

页码：733 / 750

页数：18

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