On extra boundary condition in the stagnation point flow of a second grade fluid

摘要: Abstract The two dimensional stagnation point flow of a second grade fluid is considered. governed by boundary value problem in which the order differential equations one more than number available conditions. It shown that without augmenting conditions at infinity it possible to obtain numerical solution for all values K , where dimensionless viscoelastic parameter. results using algorithm foreshadow an asymptotic behavior large . derived up terms O( −1 ). Perturbation solutions are also obtained 2 Finally approximate developed, based on stretching independent variable and minimizing residual equation least square sense. All these compared with exact appropriate conclusions drawn.