Unsteady MHD Free Convective Flow Past a Vertical Porous Plate with Span-Wise Fluctuating Heat and Mass Transfer Effects

This paper investigates the chemical reaction and thermal radiation effects on unsteady MHD free convective flow past a vertical porous plate in the presence of heat absorption/generation. The novelty of present investigation is that the temperature and concentration of the plate are span wise cosinusoidally unsteady with time. The second order perturbation technique is employed to study the non-linear partial differential equations which govern the fluid flow. The effects of magnetic parameter, radiation, Eckert number, Schmidt number and chemical reaction parameters on velocity, temperature and concentration distributions as well as skin friction coefficients, the rate of heat transfer and the rate of mass transfer are discussed through figures and tables. It is noticed that the Nusselt number declines with rising values of Prandtl and Eckert numbers.