Generation of magnetic fields by large-scale vortices in rotating convection

被引：41

作者：

Guervilly, Celine ^{[1
]}

Hughes, David W. ^{[1
]}

Jones, Chris A. ^{[1
]}

机构：

[1] Univ Leeds, Dept Appl Math, Leeds LS2 9JT, W Yorkshire, England

来源：

PHYSICAL REVIEW E | 2015年 / 91卷 / 04期

基金：

英国自然环境研究理事会;

关键词：

TURBULENT CONVECTION; GEODYNAMO MODELS; DYNAMO;

D O I：

10.1103/PhysRevE.91.041001

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：

We propose a self-consistent dynamo mechanism for the generation of large-scale magnetic fields in natural objects. Recent computational studies have described the formation of large-scale vortices in rotating turbulent convection. Here we demonstrate that for magnetic Reynolds numbers below the threshold for small-scale dynamo action, such turbulent flows can sustain large-scale magnetic fields, i.e., fields with a significant component on the scale of the system.

引用

页数：5

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