Advances in Theory and Simulations of Large-Scale Dynamos

被引：31
|
作者：
Brandenburg, Axel [1 ]
机构：
[1] NORDITA, S-10691 Stockholm, Sweden
来源：
SPACE SCIENCE REVIEWS | 2009年 / 144卷 / 1-4期
基金：
瑞典研究理事会;
关键词：
Solar dynamo; Sun; Magnetic fields; Magnetic activity; MAGNETIC HELICITY; SOLAR DYNAMO; CONVECTION ZONE; ROTATING MAGNETOCONVECTION; TURBULENT CONVECTION; GEOMAGNETIC DYNAMO; RADIATIVE INTERIOR; TAU-APPROXIMATION; INVERSE CASCADE; ALPHA;
D O I：
10.1007/s11214-009-9490-0
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Recent analytical and computational advances in the theory of large-scale dynamos are reviewed. The importance of the magnetic helicity constraint is apparent even without invoking mean-field theory. The tau approximation yields expressions that show how the magnetic helicity gets incorporated into mean-field theory. The test-field method allows an accurate numerical determination of turbulent transport coefficients in linear and nonlinear regimes. Finally, some critical views on the solar dynamo are being offered and targets for future research are highlighted.
引用
收藏
页码：87 / 104
页数：18
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