Flow of a yield stress fluid through a notch (Modelling notch flow of viscous non-Newtonian fluids)

摘要

The flow of a yield stress liquid through a notch is examined. It is shown that the method employed to analyse Newtonian flows, namely using Bernoulli’s streamline theory, is not appropriate for this type of fluid. The correction factors used by experimentalists to determine the flux are explained in terms of eddies and viscous heating.