EDP Sciences Journals List
Advanced Search
Subscriber Authentication Point
Home All issues Volume 393/1 Article
Free access article

Issue A&A
Volume 393, Number 1, October I 2002
Page(s) 339 - 343
Section Physical and chemical processes
DOI http://dx.doi.org/10.1051/0004-6361:20021007



A&A 393, 339-343 (2002)
DOI: 10.1051/0004-6361:20021007

A Taylor-Couette dynamo

A. P. Willis and C. F. Barenghi

Department of Mathematics, University of Newcastle, Newcastle upon Tyne, NE2 7RU, UK

(Received 19 April 2002 / Accepted 8 July 2002)

Abstract
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

Offprint request: C. F. Barenghi, c.f.barenghi@newcastle.ac.uk




© ESO 2002


What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.
  • If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
  • You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
  • You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.