Mass transfer effects on impulsively started vertical plate with variable surface heat flux

Numerical solution of the transient natural convection flow of an incompres sible viscous fluid past an impulsively started semi-infinite vertical plat e with variable surface heat flux and mass transfer is presented here. The governing equations are solved using implicit finite-difference scheme of C rank-Nicolson type. The velocity profiles are compared with exact solution and are found to be in good agreement. The transient and steady-state veloc ity, temperature and concentration profiles are shown graphically. it is ob served that there is a rise in the velocity due to the presence of a mass d iffusion. The local as well as average skin-friction, Nusselt number and Sh erwood number are shown graphically.