A Taylor-Couette Dynamo

Details A Taylor-Couette Dynamo A Taylor-Couette Dynamo

2002-07-25

arxiv.org/abs/astro-ph/0207566v1

Astron.Astrophys. 393 (2002) 339-344

Astronomy and Astrophysics

Astrophysics

5 pages, 11 figures. To appear in Astron. Astrophys

Scientific paper

10.1051/0004-6361:20021007

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 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.

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