Predicting the extent of dissolution of a cloud of particles entering a liquid.

Abstract

Dissolution and dispersion of solids in liquids is important in areas as diverse as extractive metallurgy and the dairy industry. A numerical model is developed to examine the effect of dissolution upon the dispersion of solids entering an initially quiescent bath. Computations are based upon a pseudo two dimensional finite volume, Eulerian--Eulerian, multiphase model. Dissolution is shown to significantly affect dispersion of solids with solid liquid density ratios greater than one. A dimensionless group equal to the ratio of the initial particle terminal velocity to the dissolution velocity is shown to be useful in predicting the extent of dissolution at specific penetration depths.