Volume 393, Number 1, October I 2002
|Page(s)||339 - 343|
|Published online||18 September 2002|
A Taylor-Couette dynamo
Department of Mathematics, University of Newcastle, Newcastle upon Tyne, NE2 7RU, UK
Corresponding author: C. F. Barenghi, email@example.com
Accepted: 8 July 2002
Recent experiments have shown that it is possible to study a fundamental astrophysical process such as dynamo action in controlled laboratory conditions using simple MHD flows. In this paper we explore the possibility that Taylor-Couette flow, already proposed as a model of the magneto-rotational instability of accretion discs, can sustain generation of a magnetic field. Firstly, by solving the kinematic dynamo problem, we identify the region of parameter space where the magnetic field's growth rate is higher. Secondly, by solving simultaneously the coupled nonlinear equations which govern velocity field and magnetic field, we find a self-consistent nonlinearly saturated dynamo.
Key words: instabilities / MHD
© ESO, 2002
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