A three-fluid model of the sand-driven flow

Abstract

The sand-driven flow is studied from the continuum viewpoint in this paper. The crux of this work is how to model the stresses of the particle phase properly. By analysing the two-fluid model which usually works in solving gas-particle two-phase flow, we find that this model has many deficiencies for studying the sand-driven flow, even for the simplest case — the steady, two-dimensional fully-developed flow.