Effects of thermal diffusion and diffusion thermo on chemically reacting MHD boundary layer flow of heat and mass transfer past a moving vertical plate with suction/injection

makinde, D.O. and Olanrewaju, P. O. Effects of thermal diffusion and diffusion thermo on chemically reacting MHD boundary layer flow of heat and mass transfer past a moving vertical plate with suction/injection. AJSE-Mathematics. (In Press)

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Abstract

Analysis is carried out to study free convective heat and mass transfer of an incompressible, electrically conducting fluid past a moving vertical plate in the presence of suction and injection with thermal diffusion (Soret) and diffusion-thermo (Dufour) effects. Similarity solutions are obtained using scaling transformations. Furthermore, using a similarity variable, the governing non-linear partial differential equations have been transformed into a set of coupled non-linear ordinary differential equations, which are solved numerically by applying shooting iteration technique together with sixth order Runge-Kutta integration scheme. A comparison with previous work is performed and the results are found to be in good agreement. Numerical results for the local skin friction coefficient, the local Nusselt number and the local Sherwood number as well as the velocity, the temperature and the concentration profiles are presented for different physical parameters. The result indicates: (i) for fluids with medium molecular weight (H2, air), Dufour and Soret effects should not be neglected; and (ii) the suction and injection parameter has significant impact in controlling the rate of heat transfer in the boundary layer. Finally, numerical values of physical quantities, such as the local skin-friction coefficient, the local Nusselt number and the local Sherwood number are presented in tabular form.

Item Type:	Article
Additional Information:	The article has been revised and submitted for publication
Uncontrolled Keywords:	Free convection; Magneto-hydrodynamics (MHD); Chemical reaction; Heat and mass transfer; Dufour and Soret effects; Moving porous plate.
Subjects:	Q Science > Q Science (General)
Divisions:	Faculty of Engineering, Science and Mathematics > School of Mathematics
Depositing User:	Dr Philip Oladapo Olanrewaju
Date Deposited:	27 Jun 2011 11:16
Last Modified:	13 Dec 2011 21:13
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/295

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