MHD flow of a micropolar fluid near a stagnation-point towards a non-linear stretching surface

The two-dimensional magnetohydrodynamic (MHD) stagnation-point flow of an incompressible micropolar fluid over a non-linear stretching surface is studied. The resulting non-linear system of equations is solved analytically using homotopy analysis method (HAM). The convergence of the obtained series solutions is explicitly discussed and given in the form of recurrence formulas. The influence of various pertinent parameters on the velocity, microrotation and skin-friction are shown in the tables and graphs. Comparison is also made with the corresponding numerical results of viscous (K = 0) [R. Cortell, Viscous flow and heat transfer over a nonlinearly stretching sheet, Appl. Math. Comput. 184 (2007) 864-873] and hydrodynamic micropolar fluid (M = 0) [R. Nazar, N. Amin, D. Filip, I. Pop, Stagnation point flow of a micropolar fluid towards a stretching sheet, Internal. J. Non-Linear Mech. 39 (2004) 1227-1235] for linear and non-linear stretching sheet. An excellent agreement is found. (C) 2008 Elsevier Ltd. All rights reserved.