Numerical simulations of turbulent dynamos

被引:0
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作者
Brandenburg, A
机构
[1] NORDITA, DK-2100 Copenhagen O, Denmark
[2] Univ Newcastle Upon Tyne, Dept Math, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
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中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Using a periodic box calculation it is shown that, owing to helicity conservation, a large scale field can only develop on a resistive timescale. This behaviour can be reproduced by a mean-field dynamo with alpha and eta(t) quenchings that are equally strong and 'catastrophic'.
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页码:742 / 744
页数:3
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