Experimentally determined mean flow characteristics of gas- solid suspensions

Particle velocity profiles, air velocity profiles, and local particle flux profiles were determined experimentally for suspensions consisting of air and spherical glass particles having average diameters of 62 and 200 U. Three tube sizes were used- 0. 5, 0. 75, and 1. 0 in. diam, and the Reynolds number ranged from 5670 to 50,000. Continuum theory of suspension flows predicts a universal velocity profile for the suspension, and the experiments produced suspension velocities which form a family of logarithmic curves with the mass loading ration as a parameter.