ABSTRACT

Abstract

In this paper, the effects of heat and mass transfer on Magnetohydrodynamic oscillatory flow in a porous medium under optically thick limit radiation was examined. The system of equation (governing equation) was dimensionalised and then solved analytically. Numerical evaluation of the analytical results obtained was performed and results were drawn graphically to illustrate the influence of various parameters on the velocity and temperature. It is observed that an increase in Peclet number increases the temperature and decrease in the velocity. Also, an increase in radiation parameter increase the temperature and the velocity. The concentration decreases with an increase in Reynolds number, Schmidt number and chemical reaction parameter. Furthermore, the magnitude of fluid velocity decreases with an increase in the thermal Grashof number while it increases as Hartmann number increases. Lastly, the amplitude of the profile of Nusselt increases as the frequency of the oscillation increases and the response of the skin friction is negligible with increasing frequency of oscillation.