Effects of Chemical Reaction on Magneto-Micropolar Fluid Flow from a Radiative Surface with Variable Permeability

Abstract

This paper presents a study of a hydromagnetic free convection flow of an electrically conducting micropolarfluid past a vertical plate through a porous medium with a heat source, taking into account the homogeneouschemical reaction of first order. A uniform magnetic field has also been considered in the study which actsperpendicular to the porous surface of the above plate. The analysis has been done by assuming varyingpermeability of the medium and the Rosseland approximation has been used to describe the radiative heat flux inthe energy equation. Numerical results are presented graphically in the form of velocity, micro- rotation,concentration and temperature profiles, the skin-friction coefficient, the couple stress coefficient, the rate of heatand mass transfers at the wall for different material parameters. The study clearly demonstrates how a chemicalreaction influences the above parameters under given conditions.