On the flow of a non-Newtonian fluid past a porous flat plate

Uniform flow of an Oldroyd fluid B past a porous flat plate is investigated. A third order ordinary differential equation for velocity is solved by the boundary conditions and it is shown that how it is possible to overcome the difficulties occuring in the determination of the constants in the solution. It is found that the velocity depends on the suction parameter, the Deborah number and the ratio of the retardation time to the relaxation time; and it is denoted that how those parameters affect on the velocity profiles. Furthermore, a detailed discussion of boundary conditions is also given.