1. The effect of varying the flow behavior index n on shear thinning and shear thickening (and hence on the flow velocity profile and volumetric flow rate) was investigated and found to be logical and sensible. This also applies to the variation of the viscosity coefficient k. An example of these investigations is given in Figure . 2. The effect of varying the tube geometry (such as the tube size and eccentricity) was investigated and found to be logical and sensible. 3. The effect of varying the pressure gradient was investigated and found to be logical and sensible.