On unsteady MHD flow through two parallel porous flat plates

An attempt is made to study the flow of an electrically conducting, incompressible, viscous fluid between two parallel porous flat plates under a time varying pressure gradient. By using Laplace transform technique an exact solution for the problem has been obtained when the pressure gradient is constant. The effect of suction and injection on the flow field has been studied. it has been shown that the transient part of the solution obtained decays more rapidly with increase in transverse magnetic field which results in early attainment of steady state. (author)