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Thermogravitational separation in horizontal annular porous cell

Abahri, Oussama and Sadaoui, Djamel and Mansouri, Kacem and Mojtabi, Abdelkader and Charrier-Mojtabi, Marie-Catherine Thermogravitational separation in horizontal annular porous cell. (2017) Mechanics and Industry, 18 (1). 106. ISSN 2257-7750

(Document in English)

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Official URL: https://doi.org/10.1051/meca/2015115


Thermogravitational separation has until now, been used in different heated vertical cells called thermogravitational columns. The cell can be an annular cavity with two isothermal faces maintained at different temperatures. The main objective of this paper is to study the two dimensional coupled convection with thermodiffusion process. It concerns a theoretical and numerical investigation of species separation in a binary liquid mixture saturating a horizontal porous annulus space where the inner cylinder is heated isothermally. This kind of geometry is used instead of the annular vertical cell, hence the novelty of this technique. Analytical resolution is performed using the perturbation method function of time versus the corresponding physics (Raleigh and Lewis numbers...). Results reveal that the separation can be increased with an optimum for small values of Rayleigh number. Further, these values are less important than the critical value of Raleigh leading to the loss of unicellular flow stability found in literature.

Item Type:Article
Additional Information:Thanks to EDP Sciences editor. The definitive version is available at https://www.mechanics-industry.org/ The original PDF of the article can be found at https://www.mechanics-industry.org/articles/meca/abs/2017/01/mi150164/mi150164.html
HAL Id:hal-01541455
Audience (journal):National 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 - Toulouse INP (FRANCE)
Other partners > Université M'Hamed Bougara Boumerdes - UMBB (ALGERIA)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Université Abderrahmane Mira de Béjaïa (ALGERIA)
Laboratory name:
Deposited On:19 Jun 2017 08:52

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