Abstract: The problem of a
two-dimensional mixed (free and forced) convective oscillatory flow and heat
transfer flow of a viscous incompressible and electrically conducting fluid past
a vertical porous plate in slip-flow regime with variable suction and periodic
plate temperature is studied. A uniform magnetic field is assumed to be applied
transversely to the direction of free stream. The governing equations are solved
by regular perturbation technique with Eckert number E
as perturbation parameter. The expressions for the velocity field, temperature
field, skin-friction at the plate in the direction of the free stream and the
coefficient of rate of heat transfer from the plate to the fluid areobtained in non-dimensional forms. The effects of the Hartmann number M,
the Grashoff number G, the suction parameter A,
the upstream velocity U, the frequency
of oscillation w on (amplitude of the skin-friction), (amplitude
of the rate of heat transfer), tana (phase of
skin-friction), tanb (phase of heat
transfer), t(skin-friction), Nu
(rate of heat transfer) are demonstrated in graphs and discussed.
Keywords and phrases: MHD, free and forced convection, oscillatory, Eckert number, viscous, incompressible, electrically conducting.
