Two-phase flow meter for determining water and solids volumetric flow rate in stratified solids-in-water flows

This paper describes a novel technique that can be used for measuring the local axial velocity
distributions of the continuous and discontinuous phases and the local volume fraction distribution of both phases in highly non-uniform multiphase flows for which the continuous phase is electrically conducting and the discontinuous phase is an insulator. From these profiles the volumetric flow rates of both phases can be calculated. In the work described in this paper solids-in-water flows were investigated, the local axial velocity distribution of the water being measured using a novel instrument known as an Electromagnetic Velocity Profiler (EVP) [1]. The local axial velocity distribution of the solids and the local volume fraction distribution of both phases were measured using an Impedance Cross Correlation (ICC) device [2].