The optimal solution for the flow of a fourth-grade fluid with partial slip

摘要: The steady flow of a non-Newtonian fluid when slippage between the plate and occurs is considered. constitutive equations are modeled for fourth-grade with partial slip; they give rise to nonlinear boundary value problems. Analytical solutions obtained using powerful analytic techniques solving problems, homotopy perturbation optimal asymptotic methods. results compared numerical it shown that exist all values parameters. valid no-slip condition parameters can be derived as special cases present analysis. Finally discussed graphical approach.