Currie, LK and Tobias, SM (2020) Generation of shear flows and vortices in rotating anelastic convection. Physical Review Fluids, 5 (7). 073501. ISSN 2469-990X
Abstract
We consider the effect of stratification on systematic large-scale flows generated in anelastic convection. We present results from three-dimensional numerical simulations of convection in a rotating plane layer in which the angle between the axis of rotation and gravity is allowed to vary. This model is representative of different latitudes of a spherical body. We consider two distinct parameter regimes: (i) weakly rotating and (ii) rapidly rotating. In each case, we examine the effect of stratification on the flow structure and heat transport properties focusing on the difference between Boussinesq and anelastic convection. Furthermore, we show that regimes (i) and (ii) generate very different large-scale flows and we investigate the role stratification has in modifying these flows. The stratified flows possess a net helicity not present in the Boussinesq cases which we suggest, when combined with the self-generated shear flows, could be important for dynamo action.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 American Physical Society. This is an author produced version of an article published in Physical Review Fluids. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mathematics (Leeds) > Applied Mathematics (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 12 Jun 2020 15:46 |
Last Modified: | 31 Jul 2020 15:31 |
Status: | Published |
Publisher: | American Physical Society |
Identification Number: | 10.1103/PhysRevFluids.5.073501 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:161690 |