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Journal of Porous Media
Facteur d'impact: 1.061 Facteur d'impact sur 5 ans: 1.151 SJR: 0.504 SNIP: 0.671 CiteScore™: 1.58

ISSN Imprimer: 1091-028X
ISSN En ligne: 1934-0508

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Journal of Porous Media

DOI: 10.1615/JPorMedia.v5.i2.60
11 pages

Effect of Variable Gravity Field on Thermal Instability in a Porous Medium with Inclined Temperature Gradient and Vertical Throughflow

Sherin M. Alex
Department of Mathematics, Anna University, Chennai (Madras), India
Prabhamani R. Patil
Department of Mathematics, Anna University, Chennai (Madras), India

RÉSUMÉ

The onset of convection in a horizontal fluid saturated isotropic porous layer with inclined temperature gradient and vertical throughflow, subject to a gravity field varying linearly with distance in the layer, is investigated. The resulting eigenvalue problem is solved using the Galerkin technique. It is seen that when the variable gravity parameter is positive, an increase in the vertical throughflow in the direction of the gravity vector always stabilizes the system. Further, an increase in the throughflow in the direction opposing gravity delays the onset of convection when the variable gravity parameter is negative.


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