Numerical study of non-Newtonian fluids flow across an abrupt enlargement

We investigate numerically the problem of laminar flow of incompressible no n-Newtonian pseudo-plastic fluids across an abrupt enlargement. The effects of different parameters on the evolution of streamlines are studied. The k ey point is to propose a correlation allowing efficient calculation of the re-establishment length. (C) Academie des sciences/Elsevier, Paris.