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Journal of Porous Media
インパクトファクター: 1.49 5年インパクトファクター: 1.159 SJR: 0.43 SNIP: 0.671 CiteScore™: 1.58

ISSN 印刷: 1091-028X
ISSN オンライン: 1934-0508

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Journal of Porous Media

DOI: 10.1615/JPorMedia.v20.i10.10
pages 865-879

DOUBLE DIFFUSIVE FREE CONVECTION ALONG A VERTICAL SURFACE IN A DOUBLY STRATIFIED POROUS MEDIUM WITH SORET AND DUFOUR EFFECTS UNDER MHD FORCES

S.V.S.S.N.V.G. Krishna Murthy
Applied Mathematics and Systems Laboratory, Ecole Centrale Paris 92295 Chatenay Malabry Cedex, France; Defence Institute of Advanced Technology, Deemed University, Pune - 411025, India
Frédéric Magoulès
Applied Mathematics and Systems Laboratory, Ecole Centrale Paris 92295 Chatenay Malabry Cedex, France
B. V. Rathish Kumar
Department of Mathematics and Statistics, Indian Institute of Technology Kanpur, Kanpur-208016, India
Vinay Kumar
Department of Applied Mathematics, Defence Institute of Advanced Technology, Deemed University, Pune – 411025, India

要約

This paper reports a study of the heat and mass transfer in a two-dimensional magnetohydrodynamic free convection boundary layer flow along a vertical semi-infinite flat surface immersed in a thermal and mass stratified Darcy porous medium under the influence of the Soret and Dufour effect. The nonlinear partial differential equations governing the problem under consideration are transformed by a similarity transformation into a system of ordinary differential equations which in turn are solved numerically by an aptly derived finite difference scheme following the Keller box approach. Obtained results, for test cases, are compared with those from the literature and found to be in good agreement. The numerical results are demonstrated graphically for various values of the parameters involved in the problem like magnetic parameter (Mg); buoyancy ratio (B); Lewis (Le), Soret (Sr), and Dufour (Df) numbers; and the presence of thermal (ST) and Mass (SC) stratification. Local and average Nusselt (Nu) number and Sherwood (Sh) number plots are presented in all cases.


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