Acta Mechanica Slovaca 2012, 16(4):76-86 | DOI: 10.21496/ams.2012.044

Efect of Hall Current and Slip Conditions on Heat and Mass Transfer of Unsteady MHD Flow of a Viscoelastic...

J.I. Oahimire1*, B.I. Olajuwon2
1 Department of Mathematics, University of Port Harcourt, Port Harcourt, Nigeria.
2 Department of Mathematics, Federal University of Agriculture, Abeokuta, Nigeria.

Heat and mass transfer effects on unsteady flow of a viscoelastic micropolar fluid over an infinite moving permeable plate in a saturated porous medium in the presence of a transverse magnetic field with Hall effect and slip conditions are studied.The governing system of partial differential equations is transformed to dimensionless equations using dimensionless variables. The dimensionless equations are then solved analytically using perturbation technique to obtain the expression for velocity, microrotation, temperature and concentration. With the help of graphs, the effects of the various important parameters entering into the problem on the velocity, microrotation, temperature and concentration fields within the boundary layer are discussed. Also the effects of the pertinent parameters on the skin friction coefficient and rates of heat and mass transfer in terms of the Nusselt number and Sherwood numbers are presented numerically in tabular form.The results shows that the observed parameters have significance influence on the flow, heat and mass transfer.

Keywords: Micropolar fluid, perturbation technique,heat and mass transfer, Hall effect and slip conditions, porous medium

Received: February 6, 2012; Accepted: March 15, 2012; Published: October 31, 2012  Show citation

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Oahimire, J.I., & Olajuwon, B.I. (2012). Efect of Hall Current and Slip Conditions on Heat and Mass Transfer of Unsteady MHD Flow of a Viscoelastic... Acta Mechanica Slovaca, 16(4), 76-86. doi: 10.21496/ams.2012.044
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