Author(s)

V. Matousek

Abstract

It is widely accepted that, in principle, a physical two-layer model satisfactorily describes the flow mechanism for stratified slurries forming particle-rich and particle-lean zones in a pipeline. However, the model component dealing with the prediction of the distribution of the solids into two layers is still under investigation. Experiments in a laboratory loop showed that there are two mechanisms for the suspension of solid particles in a carrier - turbulent mixing in a flowing carrier and dispersion due to high shear rate in a transition zone between a particle-rich and a particle-lean layer in a pipeline. An analysis of a mechanism for the particle suspension by the carrier turbulence is submitted and a relationship is proposed for use in the two-layer mod

Keywords