AN UNSTEADY MHD FLOW OF CASSON FLUID PAST AN EXPONENTIALLY ACCELERATED VERTICAL PLATE

An unsteady, magnetohydrodynamic, incompressible, radiative Casson fluid flow past an infinite vertical permeable plate, which is accelerated exponentially, in presence of heat sink parameter and first-order chemical reaction taking account of Soret effect, is considered. Governing equations are solved for the profiles of velocity, temperature and concentration with the help of Laplace transform. The effects of various physical parameters on velocity, temperature and concentration profiles are discussed with the help of graphs. It is seen that the Casson parameter increases the fluid velocity near the plate, but away from the plate it is opposite. Also, an increase in Casson parameter has a significant increase in skin friction. Velocity has a significant increase with increase in the accelerating parameter, Soret number and chemical reaction parameter, while heat sink parameter, radiation parameter reduces the fluid velocity.