| Abstract: | An empirical expression for the prediction of dispersed phase hold-up and slip velocity in droplet dispersions settling under gravity is presented. Analysis of 998 published experimental results for 29 liquid/liquid systems from 14 different data sources shows that the slip velocity of the drop swarm is given in terms of drop diameter and physical properties of the system by:  Good agreement between experimental and predicted values of slip velocity is obtained over a wide range of hold-up (0.01 to 0.76) and Reynolds number (0.16 to 3169). |
