Radiation Absorption, Chemical Reaction and Magnetic Filed Effects On The Free Convection And Mass Transfer Flow Through Porous Medium With Constant Suction And Constant Heat Flux

An attempt has been made to study the effect of the steady two-dimensional free convection heat and mass transfer flow electrically conducting and chemically reacting fluid through a porous medium bounded by a vertical infinite surface with constant suction velocity and constant heat flux in the presence of a uniform magnetic field is presented. The governing equations are couples and non linear. These equations are solved by perturbation technique. The effect of Grashof number for heat transfer Gr>0 corresponds to externally cooled plate and Gr<0 specified condition for externally heated plate). Grashof number for heat transfer(Gr), Mass Grashof number(Mm), Schmidt number(Sc), permeability parameter(K), heat source parameter(φ), radiation absorption parameter(Q₁), Magnetic number(M) and Chemical reaction parameter(Kr) taking two cases viz. Case(I): when Gr>0, (i.e. flow on cooled plate) and Case(II) Gr<0 (i.e. flow on heated plate). All numerical calculation are done with respect to air (Pr = 0.71 at 20°C). The effects of the above mentioned parameters on skin friction coefficient at the surface are also presented.