Numerical solution of unsteady flow of a radiating and chemically reacting fluid with time-dependent suction

The numerical solution of unsteady laminar, boundary layer flow of a viscous incompressible, electrically conducting fluid along a semi-infinite vertical plate, in the presence of thermal and concentration buoyancy effects has been obtained, using implicit finite difference method for velocity, temperature and concentration fields. The results for the velocity, temperature shear stress, Nusselt number and Sherwood-numbers have been obtained and discussed for different flow parameters such as Sc, K r, Gr, Gm, N R and Pr . It has been found that an increase in the chemical reaction leads to decrease in the velocity and concentration boundary layer, but, an increase in the thermal radiation increases the velocity and temperature boundary layer. These results are found to be in good agreement with the previous results.