Simple models of nonlinear fluctuation dynamo
作者:
Mikhail Belyanin,
Dmitry Sokoloff,
Anvar Shukurov,
期刊:
Geophysical & Astrophysical Fluid Dynamics
(Taylor Available online 1993)
卷期:
Volume 68,
issue 1-4
页码: 237-261
ISSN:0309-1929
年代: 1993
DOI:10.1080/03091929308203569
出版商: Taylor & Francis Group
关键词: Fluctuation dynamo;nonlinear regimes;asymptotic solutions
数据来源: Taylor
摘要:
We discuss asymptotic solutions of nonlinear steady-state equations of the fluctuation dynamo, i.e. equations describing generation of a random magnetic field in a random mirror symmetric flow of conducting fluid. The flow is assumed to be locally homogeneous and isotropic and the correlation scalelis considered to be small in comparison to the size of the region occupied by the flow,L.These presumptions admit a closed nonlinear equation for the mean energy density of the magnetic field whose solutions are considered here forl/L≪ 1.
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