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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.v21.i6.50
pages 555-576

THERMOPHORESIS AND HEAT GENERATION/ABSORPTION EFFECTS ON MAGNETOHYDRODYNAMIC FLOW OF JEFFREY FLUID OVER POROUS OSCILLATORY STRETCHING SURFACE WITH CONVECTIVE BOUNDARY CONDITIONS

Sami Ullah Khan
Department of Mathematics, COMSATS University Islamabad Sahiwal Campus, Sahiwal 57000, Pakistan
Nasir Ali
Department of Mathematics and Statistics, International Islamic University, Islamabad 44000, Pakistan

RESUMO

In the current work, the effects of thermophoresis, heat generation/absorption, chemical reaction, and thermal radiation on two-dimensional boundary layer flow of a Jeffrey fluid over an oscillatory stretching surface embedded in a porous medium are investigated. Unlike typical studies, the idea of convective boundary conditions is used to investigate heat and mass transfer phenomenon. With the help of appropriate dimensionless variables, the number of independent variables is reduced in the governing equations, which are then solved analytically by using the homotopy analysis method. The effects of involved physical parameters such as Deborah number, ratio of relaxation to retardation time, Hartmann number, Prandtl number, heat absorption/generation parameter, thermal and concentration and Biot numbers, chemical reaction parameter, Schmidt number and thermophoresis parameter on dimensionless velocity, temperature, and concentration distributions are investigated and discussed quantitatively with the help of various graphs. It is observed that amplitude of oscillations in velocity increases with increasing Deborah number while it follows an opposite trend with increasing porosity parameter. Moreover, the heat transfer increases with increasing porosity parameter and ratio of relaxation to retardation time while it decreases with increasing Deborah number.


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