system with x-axis along the lower stationary plate in the
direction of the flow, the y-axis is perpendicular to the plates
(see Fig. 1). A uniform transverse magnetic field B0 is applied
perpendicular to the channel plates. Since the plates are
infinitely long, all physical variables, except pressure, depend
on y only. The equation of continuity then gives v= v0
everywhere in the fluid where v0 is the suction velocity at
the plates.