Double-Diffusive Convection-Radiation Interaction On Unsteady Mhd Flow Of A Micropolar Fluid Over A Vertical Moving Porous Plate Embedded In A Porous Medium With Heat Generation And Soret Effects

-------------------------------------------------------Abstract-----------------------------------------------------This paper investigation is concerned with the first-order homogeneous chemical reaction and thermal rad iation on hydromagnetic free convection heat and mass transfer for a micropolar flu id past a semi-infinite vert ical moving porous plate in the presence of thermal diffusion and heat generation. The fluid is considered to be a gray, absorbing-emitting but non-scattering medium, and the Rosseland approximation is used to describe the radiative heat flux in the energy equation. The plate moves with constant velocity in the direction of fluid flow while the free stream velocity is assumed to follow the exponentially increasing small perturbation law. A uniform magnetic field acts perpendicular to the porous surface, which absorbs the fluid with a suction velocity varying with time. Numerical results of velocity profiles of micropolar fluids are compared with the corresponding flow problems for a Newtonian fluid. The dimensionless governing equations for this investigation are solved analytically using two-term harmonic and non-harmonic functions. The effects of various parameters on the velocity, microrotation, temperature and concentration fields as well as the skinfriction coefficient, Nusselt number and the Sherwood number are presented graphically and in tabulated forms.