Indian Journal of Science and Technology

Abstract

An attempt is made to investigate the problem of an oscillatory MHD free convective flow through a porous medium with mass transfer, Soret effect and chemical reaction when the temperature as well as concentration at the plate varies periodically with time about a steady mean. Analytical solutions to the coupled non-linear equations governing the flow and heat and mass transfer are obtained by using regular perturbation technique. The influence of the different parameters entering in to the problem viz. the Hartmann number M, the Grashof number for heat transfer G_r , the Grashof number for mass transfer G_m , Soret number S₀ , the plate velocity U , chemical reaction C_h etc. on temperature distribution, species concentration, velocity distribution, skin-friction and the rates of heat and mass transfer at the plate are discussed graphically. 2000 Mathematics subject classification: 76 D, 76 W 05
Keywords: Free convection, MHD, thermal diffusion, chemical reaction.