Transient free convection flow of a viscous dissipative fluid with mass transfer past a semi-infinite vertical plate

49-57Transient free convection flow of a dissipative fluid past a semi -infinite vertical plate is studied by considering the presence of species concentration. The governing equations in non-dimensional form are solved by implicit finite-difference technique of Crank-Nicholson which is stable and convergent. Transient velocity, temperature and concentration profiles,local and average Skin-friction, Nusselt number and Sherwood number are shown graphically for air. The effects of viscous dissipative heat, Schnidt number, buoyancy ratio parameter on the transient state are discussed