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Soret-driven convection and separation of binary mixtures in a porous horizontal slot submitted to a heat flux

Charrier-Mojtabi, Marie-Catherine and Elhajjar, Bilal and Ouattara, Bafétigué and Mojtabi, Abdelkader and Costesèque, Pierre Soret-driven convection and separation of binary mixtures in a porous horizontal slot submitted to a heat flux. (2011) Comptes Rendus Mécanique, 339 (5). 303-309. ISSN 1631-0721

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Official URL: http://dx.doi.org/10.1016/j.crme.2011.03.006

Abstract

The onset of Soret-driven convection in a shallow porous horizontal layer filled with a binary mixture and submitted to a vertical heat flux on the two horizontal walls is investigated. We study the species separation between the two vertical ends of the cell, which appears for low values of the Rayleigh number and for positive separation ratio. An analytical solution is performed and the separation is expressed in terms of thermal Rayleigh number, Lewis number, separation ratio and aspect ratio of the cell. These analytical results are corroborated by direct non-linear numerical simulations. Then, the results are compared with those obtained in a differentially heated vertical cavity.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The original PDF of the article can be found at http://www.sciencedirect.com/science/article/pii/S1631072111000349
HAL Id:hal-00926373
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Deposited By: Bafetigue OUATTARA
Deposited On:09 Jan 2014 14:07

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