| Issue |
A&A
Volume 393, Number 1, October I 2002
|
|
|---|---|---|
| Page(s) | 339 - 343 | |
| Section | Astronomical instrumentation | |
| DOI | https://doi.org/10.1051/0004-6361:20021007 | |
| 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, c.f.barenghi@newcastle.ac.uk
Received:
19
April
2002
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
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.