%0 Journal Article %T HOMOTOPY PERTURBATION METHOD FOR SOLVING FLOW IN THE EXTRUSION PROCESSES %J International Journal of Engineering %I Materials and Energy Research Center %Z 1025-2495 %A Rashidi, M. M. %D 2010 %\ 11/01/2010 %V 23 %N 3 %P 267-272 %! HOMOTOPY PERTURBATION METHOD FOR SOLVING FLOW IN THE EXTRUSION PROCESSES %K Homotopy Perturbation Method %K Viscous %K Extrusion Processes %R %X 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. %U https://www.ije.ir/article_71869_60deb6d42d265ea5828136d3198a8534.pdf