Author(s)

J.W. Holbeach & M.R. Davidson

Abstract

The penetration, dispersion and eventual coalescence of two pulses of monosized spherical solid particles dropped successively into an initially quiescent. fluid is examined numerically. Solid particle motion is modelled via a Eulerian - Eulerian, multiphase, finite volume approach, within a cylindrical geometry. Flow of the solid and liquid phases is coupled numerically and inter-particle interactions are modelled using a solids pressure expression. The dispersion of single and double pulses of micron sized spherical particles were undertaken for comparison. In the case of two successive pulses of solids, the first pulse of solids is found to form a closed torus which is subsequently penetrated by the second pulse. Thereafter, the two pulses combine to form

Keywords