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Journal of Porous Media
Fator do impacto: 1.49 FI de cinco anos: 1.159 SJR: 0.504 SNIP: 0.671 CiteScore™: 1.58

ISSN Imprimir: 1091-028X
ISSN On-line: 1934-0508

Volumes:
Volume 22, 2019 Volume 21, 2018 Volume 20, 2017 Volume 19, 2016 Volume 18, 2015 Volume 17, 2014 Volume 16, 2013 Volume 15, 2012 Volume 14, 2011 Volume 13, 2010 Volume 12, 2009 Volume 11, 2008 Volume 10, 2007 Volume 9, 2006 Volume 8, 2005 Volume 7, 2004 Volume 6, 2003 Volume 5, 2002 Volume 4, 2001 Volume 3, 2000 Volume 2, 1999 Volume 1, 1998

Journal of Porous Media

DOI: 10.1615/JPorMedia.v15.i10.30
pages 909-926

ANALYTICAL AND NUMERICAL STUDY OF DOUBLE DIFFUSIVE NATURAL CONVECTION IN A CONFINED POROUS MEDIUM SUBJECTED TO HEAT AND MASS FLUXES

Smail Benissaad
Laboratory of Applied Energy and Pollution, Mechanical Engineering Department, University Mentouri, Constantine, Algeria
Nabil Ouazaa
Laboratory of Applied Energy and Pollution, Mechanical Engineering Department, University Mentouri, Constantine, Algeria

RESUMO

We are interested in the theoretical and numerical study of coupled heat and mass transfer in a porous medium saturated by a binary fluid in a two-dimensional rectangular cavity. Uniform and constant heat and mass fluxes are imposed on the horizontal walls, whereas the vertical walls are considered impermeable and adiabatic. We used the model of Darcy to establish the mathematical model describing the phenomenon of double diffusion natural convection within the porous medium. In the case of an elongated cavity subjected to uniform and constant heat and mass fluxes, it is possible to use the parallel flow hypothesis to obtain an analytical solution describing the fields of stream function, temperature, and concentration. The obtained results showed an excellent agreement between the analytical solution and the numerical simulation and allowed the evaluation of the effects of control parameters on the flow structure and on the heat and mass transfer.


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