On axisymmetric flow of Sisko fluid over a radially stretching sheet

摘要: Abstract This study presents an analysis of the axisymmetric flow a non-Newtonian fluid over radially stretching sheet. The momentum equations for two-dimensional are first modeled Sisko constitutive model, which is combination power-law and Newtonian fluids. general then simplified by invoking boundary layer analysis. Then non-linear ordinary differential equation governing sheet obtained introducing new suitable similarity transformations. resulting solved analytically via homotopy method (HAM). Closed form exact solution also cases n=0 1. Analytical results presented velocity profiles some values parameters such as index, material parameter parameter. In addition, local skin friction coefficient several sets physical tabulated analyzed. It shown that in this quite so corresponding can be two limiting cases.