dc.contributor.author | Currie, LK | |
dc.date.accessioned | 2016-11-14T14:25:45Z | |
dc.date.issued | 2016-11-11 | |
dc.description.abstract | Motivated by the significant interaction of convection, rotation, and magnetic field in many astrophysical objects,
we investigate the interplay between large-scale flows driven by rotating convection and an imposed magnetic
field. We utilize a simple model in two dimensions comprised of a plane layer that is rotating about an axis inclined
to gravity. It is known that this setup can result in strong mean flows; we numerically examine the effect of an
imposed horizontal magnetic field on such flows. We show that increasing the field strength in general suppresses
the time-dependent mean flows, but in some cases it organizes them, leading to stronger time-averaged flows.
Furthermore, we discuss the effect of the field on the correlations responsible for driving the flows and the
competition between Reynolds and Maxwell stresses. A change in behavior is observed when the (fluid and
magnetic) Prandtl numbers are decreased. In the smaller Prandtl number regime, it is shown that significant mean
flows can persist even when the quenching of the overall flow velocity by the field is relatively strong. | en_GB |
dc.description.sponsorship | Most of this work was carried out while I was a Ph.D student at
the University of Leeds and I am grateful to the Science and
Technology Facilities Council (STFC) for a Ph.D. studentship.
This work was also supported by the European Research Council
under ERC grant agreement No. 337705 (CHASM). Some of this
work was undertaken on ARC1, part of the High Performance
Computing facilities at the University of Leeds, UK, and some on
the University of Exeter supercomputer, a DiRAC Facility jointly
funded by STFC, the Large Facilities Capital Fund of BIS and the
University of Exeter. | en_GB |
dc.identifier.citation | Vol 832:14 | en_GB |
dc.identifier.doi | 10.3847/0004-637X/832/1/14 | |
dc.identifier.uri | http://hdl.handle.net/10871/24408 | |
dc.language.iso | en | en_GB |
dc.publisher | American Astronomical Society | en_GB |
dc.rights | © 2016. The American Astronomical Society. All rights reserved. | en_GB |
dc.subject | convection | en_GB |
dc.subject | magnetohydrodynamics (MHD) | en_GB |
dc.subject | stars: interiors | en_GB |
dc.subject | stars: magnetic field | en_GB |
dc.title | The effect of magnetic field on mean flow generation by rotating two-dimensional convection | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2016-11-14T14:25:45Z | |
dc.identifier.issn | 1538-4357 | |
dc.description | This is the final version of the article. Available from the publisher via the DOI in this record. | en_GB |
dc.identifier.journal | Astrophysical Journal | en_GB |