The steady two-dimensional laminar forced convection boundary layer flow of an incompressible viscous Newtonian fluid over\na nonlinearly stretching porous (permeable) sheet with suction is considered. The sheet�s permeability is also considered to\nbe nonlinear. The boundary layer equations are transformed by similarity transformations to a nonlinear ordinary differential\nequation (ODE). Then the homotopy perturbation method (HPM) is used to solve the resultant nonlinear ODE.The dimensionless\nentrainment parameter and the dimensionless sheet surface shear stress are obtained for various values of the suction parameter\nand the nonlinearity factor of sheet stretching and permeability. The results indicate that the dimensionless sheet surface shear\nstress decreases with the increase of suction parameter.The results of present HPM solution are compared to the values obtained in\na previous study by the homotopy analysis method (HAM). The HPM results show that they are in good agreement with the HAM\nresults within 2% error.
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