Flow of power-law fluid over a stretching surface: A Lie group analysis

摘要: Abstract This paper investigates the boundary layer flow of power-law fluid over a permeable stretching surface. The use Lie group analysis reveals all possible similarity transformations problem. application infinitesimal generator on generalized surface conditions leads to two which possibility types velocities namely; and exponential stretching. has already been discussed in literature, however is investigated here for first time. Interestingly, an exact analytical solution non-linear equation developed shear thinning with index n =1/2. further extended larger class fluids ( ≈1/2) using perturbation method. In addition, numerical also presented. solutions match excellently fluids. Analytical thickening not tractable presented completeness.