Expansion flows of non-Newtonian liquids

We consider a number of expansion flows for different non-Newtonian liquids. In the first example, the liquid is an aqueous polymer solution and the expansion flows of interest may be considered to be either two-dimensional or three-dimensional. The large vortex activity which is created by fluid inertia is damped by fluid elastiaty. In the find group of experiments, a fibre suspension in a Newtonian matrix is investigated in both an axisymmetric contraction flow and an axisymetric expansion flow. In the second group of experiments, a fibre suspension in a Newtonian matrix is investigated in both an axisymmetric contraction flow and an axisymmetric expansion flow.