www.iaset.us editor@iaset.us MASS TRANSFER WITH CHEMICAL REACTION EFFECTS ON MHD FREE CONVECTIVE FLOW PAST AN ACCELERATED VERTICAL PLATE EMBEDDED IN A POROUS MEDIUM HEMANT POONIA 1 & R. C. CHAUDHARY 2 1 Department of Math, Stat & Phy, CCSHAU, Hisar, Haryana, India 2 Emeritus Scientist, University of Rajasthan, Jaipur, India ABSTRACT This paper presents an analytical study of MHD heat and mass transfer flow by natural convection through an accelerated infinite vertical plate embedded in a porous medium in the presence of chemical reaction. The plate accelerates in its own plane. The governing equations of motion are solved in closed form by the Laplace-transform technique. The flow phenomenon has been characterized with the help of flow parameters such as porosity parameter, Schmidt number (Sc) and Prandtl number (Pr). The effects of various flow parameters have been studied and results are presented graphically and discussed qualitatively. The problem assumes greater importance in several geo-physicals and astrophysical studies hence the analysis. KEYWORDS: Chemical Reaction, Heat and Mass Transfer, MHD, Natural Convection, Porous Medium 1. INTRODUCTION Natural convection flows are frequently encountered in physical and engineering problems such as chemical catalytic reactors, nuclear waste materials etc. Transient free convection is important in many practical applications, such as furnaces, electronic components, solar collectors, thermal regulation process, security of energy systems etc. MHD free convective heat transfer flow is considerable interest in the technical field due its frequent occurrence in industrial technology and geothermal application, liquid metal fluids and MHD power generation systems etc. Transport processes in porous media are encountered in a board range of scientific and engineering problems associated with the fiber and granular insulation materials, packed-bed chemical reactors and transpiration cooling. Simultaneous heat and mass transfer from different geometries embedded in porous media has many engineering and geophysical applications such as geothermal reservoirs, drying of porous solids, thermal insulation and underground energy transport. The effect of chemical and thermal diffusion in Hall current on the unsteady Hydro magnetic flow near an infinite vertical porous plate was studied by Acharya et al. [1]. Recently Aldoss et al. [2] investigated MHD transient free convection flow over a surface by finite difference method. Chamkha et al. [3] examined the effect of thermophoresis of aerosol practical in the laminar boundary layer on a vertical plate. Free convection effects on flow past a moving vertical plate embedded in porous medium by Laplace-transform technique analyzed by Chaudhary and Jain [4]. Chin et al. [5] studied the effect of variable viscosity on mixed convection boundary layer over a vertical surface. The effects of heat and mass transfer laminar boundary layer flow over a wedge have been concluded by Gebhart and Pera [6]. Hady et al. [7] investigated the effect of temperature-dependent viscosity on the mixed convection flow from vertical plate. Mixed convection flow from a vertical flat plate with temperature dependent viscosity has been studied by Hossain and Munir [8]. International Journal of Applied Mathematics & Statistical Sciences (IJAMSS) ISSN(P): 2319-3972; ISSN(E): 2319-3980 Vol. 5, Issue 5, Aug - Sep 2016; 33-46 © IASET