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Soret and Dufour effects on mixed convection unsteady MHD boundary layer flow over stretching sheet in porous medium with chemically reactive species

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  • 1. Silicon Institute of Technology, Bhubaneswar 751024, India;
    2. Department of Mathematics, National Institute of Technology, Calicut 673601, India;
    3. Department of Mathematics, Moran College, Moranhat, Assam 785670, India

Received date: 2013-02-06

  Revised date: 2014-02-14

  Online published: 2014-07-01

Abstract

This paper studies the thermal-diffusion and diffusion thermo-effects in the hydro-magnetic unsteady flow by a mixed convection boundary layer past an imperme- able vertical stretching sheet in a porous medium in the presence of chemical reaction. The velocity of the stretching surface, the surface temperature, and the concentration are assumed to vary linearly with the distance along the surface. The governing partial differential equations are transformed into self-similar unsteady equations using similarity transformations and solved numerically by the Runge-Kutta fourth order scheme in as- sociation with the shooting method for the whole transient domain from the initial state to the final steady state flow. Numerical results for the velocity, the temperature, the concentration, the skin friction, and the Nusselt and Sherwood numbers are shown graph- ically for various flow parameters. The results reveal that there is a smooth transition of flow from unsteady state to the final steady state. A special case of our results is in good agreement with an earlier published work.

Cite this article

A. NAYAK;S. PANDA;D. K. PHUKAN . Soret and Dufour effects on mixed convection unsteady MHD boundary layer flow over stretching sheet in porous medium with chemically reactive species[J]. Applied Mathematics and Mechanics, 2014 , 35(7) : 849 -862 . DOI: 10.1007/s10483-014-1830-9

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