1989 Volume 3 Issue 2 Pages 131-144
The velocity of single particles in air-water two-phase flows has been investigated. The geometrical shape of the test particles were sphere and cube; their size ranged in volume-equivalent diameter from 4 to 10mm; their density ranged from 1190 to 7850kg/m3. The volumetric fluxes of air and water varied within the ranges of 0≤jG<10m/s and 0≤jL<1.5m/s, respectively. The velocity of the particles in a vertical pipe of 26mm I.D. was measured using a pair of metal detectors. Both air and water velocities at which the particles float in the pipe were also measured. A simple model to correlate particle velocity with two-phase flow parameters is presented, based on the experimental data of spherical particles. The proposed model is compared with the data of cubic particles and shows good agreement.
