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Journal of Porous Media
Fator do impacto: 1.752 FI de cinco anos: 1.487 SJR: 0.43 SNIP: 0.762 CiteScore™: 2.3

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

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Journal of Porous Media

DOI: 10.1615/JPorMedia.v6.i2.40
14 pages

Double Diffusive Natural Convection in a Cylinder Filled with Moist Porous Grains and Exposed to a Constant Wall Heat Flux

Leila Zili-Ghedira
Energy and Thermal Systems Laboratory, National Engineering School of Monastir, University of Monastir, Avenue Ibn El Jazzar, 5019 Monastir, Tunisia
Khalifa Slimi
ISTLS
Sassi Ben Nasrallah
Laboratoire d'Études des Systèmes Thermiques et Énergétiques, Ecole Nationale d'Ingénieurs de Monastir, Monastir 5019 Tunisie

RESUMO

Fluid flow and heat and mass transfer induced by double-diffusive natural convection within a vertical cylinder filled with a moist granular product, opened at both edges and exposed to a constant wall heat flux, is studied numerically in this paper. The innovation of this study, in addition to the fact of considering a nonconfined geometry, consists of taking into account the evaporation/condensation phenomena within grains via the drying kinetics. The resolution of the equations set is done by the finite-volume method. The numerical code validation was carried out in a previous paper. We report here the time-space evolution of temperature, pressure, velocity, vapor concentration, and water content in the medium. The effect of varying external temperature, concentration, and wall heat flux was also studied.


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