Double Diffusive Mixed Convection in a Couple Stress Fluids with Variable Fluid Properties

Abstract

Study of double diffusive mixed convection flow of a non-Newtonian couple stress fluid over a vertical heated plate in a sparsely packed porous medium with variable fluid properties has been investigated analytically and numerically. The governing non-linear partial differential equations are transformed into a system of ordinary differential equations using similarity transformation and then solved numerically using the shooting technique that involve Runge-Kutta-Fehlberg integration scheme and Newton-Raphson corrector method to obtain the non-dimensionalised velocity, temperature and concentration distributions. The Influence of non-dimensional governing parameters on velocity, temperature and concentration profiles along with friction factor, heat and mass transfer rates were discussed and presented through graphs and tables. Comparisons of the present results made with the existed results. We have found an excellent agreement with the existed results.