a study on free convective heat and mass transfer flow through a highly porous medium with radiation, chemical reaction and soret effects

This paper addresses the effects of soret on unsteady free convection flow of viscous incompressible fluid through a porous medium with high porosity bounded by a vertical infinite moving plate under the influence of thermal radiation, chemical reaction, and heat source. the fluid is considered to be gray, absorbing, and emitting but non-scattering medium. rosseland approximation is considered to describe the radiative heat flux in the energy equation. the dimensionless governing equations for this investigation are solved analytically using perturbation technique. the effects of various governing parameters on the velocity, temperature, concentration, skin-friction coefficient, nusselt number and sherwood number are shown in figures and tables and analyzed in detail. it was noticed that velocity distribution increased with increasing buoyancy parameters; temperature decreased with increasing prandtl number, and concentration decreased with increasing the schmidt number and chemical reaction parameter.