• THE COMBINED EFFECT OF CHEMICAL REACTION, HEAT AND MASS TRANSFER ON AN UNSTEADY MHD FREE CONVECTIVE FLOW EMBEDDED IN A POROUS MEDIUM WITH HEAT GENERATION/ABSORPTION

T. K. DAS*, A. K. MISHRA, N. SENAPATI

Abstract


An unsteady MHD mixed free convection  two dimensional laminar, boundary layer flow of a viscous incompressible electrically  conducting fluid along a semi  infinite vertical porous flat plate in presence of thermal and chemical effects under the influence of uniform magnetic field applied normal to the flow has been obtained. The dimensionless governing equations are solved by using multi-parameter perturbation technique. The results are obtained for mean velocity, mean temperature, mean concentration, nusselt number of mean temperature and skin friction of mean velocity. The effect of various material parameters are discussed for cooling (Gr>0) and heating (Gr<0) of the plate on flow variables and presented by graphs and tables.  


Keywords


MHD flow, free convection, mass transfer, heat transfer, chemical reaction, porous medium, buoyancy effect.

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