Abstract
A steady two-dimensional magnetohydrodynamic boundary-layer control with uniform suction or injection is investigated. The transverse magnetic field is fixed to the semi-infinite flat plate and the electric field is assumed to be zero. A nonsimilar boundary-layer equation is solved numerically by a difference-differential method originated by Hartree and Womersley and improved by Katagiri. The velocity profiles and the coefficient of the skin friction are computed for various values of magnetic parameter and suction/injection parameter. The graphical plots indicate increasing boundary-layer thickness and decreasing skin-friction coefficient with increasing magnetic parameter, and also decreasing boundary-layer thickness and increasing skin-friction coefficient with increasing sunction/injection parameter. The magnetic field is found to be rather efficient in modifying the boundary layer, especially with the help of a proper seeding material.
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