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Journal of Porous Media
Factor de Impacto: 1.49 Factor de Impacto de 5 años: 1.159 SJR: 0.504 SNIP: 0.671 CiteScore™: 1.58

ISSN Imprimir: 1091-028X
ISSN En Línea: 1934-0508

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Journal of Porous Media

DOI: 10.1615/JPorMedia.v19.i9.60
pages 821-839

COMBINED EFFECT OF HEAT AND MASS TRANSFER IN MHD FLOW OF A NANOFLUID BETWEEN EXPANDING/CONTRACTING WALLS OF A POROUS CHANNEL

Muhammad Farooq Iqbal
Centre for Advanced Studies in Pure and Applied Mathematics, (CASPAM), Bahauddin Zakariya University, (BZU), Multan, 608000 Pakistan
Shahzad Ahmad
Center for Advanced Studies in Pure and Applied Mathematics, Bahauddin Zakariya University, Multan, Pakistan
Kashif Ali
Center for Advanced Studies in Pure and Applied Mathematics (CASPAM), Bahauddin Zakariya University, 60800-BZU, Multan-60000, Pakistan
Muhammad Ashraf
Department of Mathematics, Faculty of Science, University of Sargodha, Sargodha, 40100, Pakistan

SINOPSIS

We consider an incompressible laminar viscous nanofluid in a porous channel with expanding/contracting walls. The governing equations of flow and heat transfer are reduced into a set of nonlinear coupled ordinary differential equations (ODEs). A combination of an iterative (successive over relaxation) and a direct method is employed for solving the sparse systems of linear algebraic equations arising from the finite difference discretization of the linearized self-similar ODEs. We have noticed that the permeability Reynolds number increases both the shear stress and the heat transfer rate when the porous walls of the channel are moving away, whereas the viscous dissipation always increases the heat transfer rate at the walls, irrespective of the wall movement.


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