M. M. Rashidi - Mechanical Engineering, Buali Sina University

In this paper, the homotopy perturbation method (HPM) is considered for finding approximate solutions of two-dimensional viscous flow. This technique provides a sequence of functions which converges to the exact solution of the problem. The HPM does not need a small parameters in the equations, but; the perturbation method depends on small parameter assumption and the obtained results. In most cases, it ends up with a non-physical result, so homotopy perturbation method overcomes completely the above shortcomings. HPM is very convenient and effective and the solutions is compared with the exact solution.

Homotopy Perturbation Method, Viscous, Extrusion Processes