Variable mass diffusion effects on free convection flow past an impulsively started infinite vertical plate

Abstract

Abstract. An exact analysis of the problem of free convection flow of a viscous incompressible chemically reacting fluid past an infinite vertical plate with the flow due to impulsive motion of the plate with Newtonian heating in the presence of thermal radiation and variable mass diffusion is performed. The resulting governing equations were tackled by Laplace transform technique. Finally the effects of pertinent flow parameters such as the radiation parameter, chemical reaction parameter, buoyancy ratio parameter, thermal Grashof number, Schmidt number, Prandtl number and time on the velocity, temperature, concentration and skin friction for both aiding and opposing flows were examined in detail when Pr=0.71(conducting air) and Pr=7.0(water).

Combined Effect of Thermal Radiation and Viscous Dissipation on Unsteady Free Convective Magneto-Hydrodynamic Flow Through an Irregular Channel

“…Laplace transform method was used for the analysis and it was reported that the flow field was retarded due to the presence of the magnetic parameter. Kumar et al (2017) presented effects of variable mass diffusion on natural convective fluid flow via an infinite vertical impulsively started plate. Iva et al (2018) analysed the effect of heat generation in free convective MHD unsteady mass and heat transfer flow via an inclined surface.…”