Suslov, Sergey A. (2007) Convective and absolute instabilities in non-Boussinesq mixed convection. Theoretical and Computational Fluid Dynamics, 21 (4). pp. 271-290. ISSN 0935-4964
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Abstract
[Abstract]: The problem of non-Boussinesq mixed convection in a vertical channel formed by two differentially heated infinite plates is investigated and the complete convective/absolute instability boundary is computed for a wide range of physical parameters. A physical insight into the mechanisms causing instabilities is given. In particular, it
is shown that the appearance of absolute instability is always dictated by a flow reversal within a channel, however existence of the flow reversal does not exclude the possibility of convective instability. It is also shown that fluid's nonlinear transport
property variations have a dramatic effect on the structure and complexity of spatio-temporal instabilities of the co-existing buoyancy and shear modes as the temperature difference across the channel increases. The validity of the stability results obtained using the procedure described in (J. Comp. Phys.212, 188-217) is assessed using the
method of steepest descent.
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Item Type: | Article (Commonwealth Reporting Category C) |
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Refereed: | Yes |
Item Status: | Live Archive |
Additional Information: | Deposited in accordance with the copyright policy of the publisher (Springer-Verlag). |
Faculty/School / Institute/Centre: | Historic - Faculty of Sciences - Department of Maths and Computing (Up to 30 Jun 2013) |
Faculty/School / Institute/Centre: | Historic - Faculty of Sciences - Department of Maths and Computing (Up to 30 Jun 2013) |
Date Deposited: | 11 Oct 2007 01:10 |
Last Modified: | 02 Jul 2013 22:45 |
Uncontrolled Keywords: | spatio-temporal instability; non-Boussinesq convection; mixed convection |
Fields of Research (2008): | 02 Physical Sciences > 0203 Classical Physics > 020303 Fluid Physics 09 Engineering > 0915 Interdisciplinary Engineering > 091501 Computational Fluid Dynamics |
Identification Number or DOI: | doi:10.107/s00162-007-0049-y |
URI: | http://eprints.usq.edu.au/id/eprint/2582 |
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