Development of Two-Dimensional Boundary Layer with an Applied Magnetic Field due to an Impulsive Motion

The development of the asymmetric flow of a viscous electrically conducting fluid in the forward stagnation point region of a two-dimensional body and over a stretching surface with an applied magnetic field has been investigated when the external stream or the stretching surface is set into an impulsive motion from rest. The analysis gives a uniformly valid solution starting from an initial time t=0 to the time t to infinity when the steady state is reached, the parabolic partial differential equations governing the unsteady flow have been solved numerically using an implicit finite-difference scheme. Analytical solutions have also been obtained for some particular cases. The surfaces shear stresses corresponding to symmetric and asymmetric flows increase with the magnetic field and tim