Hold-up in multi-sized particulate solid-liquid flow through horizontal pipes

Abstract

Hold-up is an important design parameter for pipelines transporting solid liquid mixture as it correctly determines the <i>in</i> <i>situ </i>volume fraction of different phases. Extensive experiments have been reported to establish the effect of solid concentration, flow velocity and particle size on hold-up. Based on the data base, a simple correlation has been proposed for

determination of hold-up for multi-sized solid-liquid flow through pipes. The proposed correlation [HR = 1+ 0.64(<i>W</i>_o /<i>U_*</i>)^1.50]<i> </i>incorporates the effect of all the factors affecting hold-up such as solid concentration, flow velocity, particle size,<i> </i>pipe diameter, etc. The predictions based on the proposed correlation match reasonably well with the experimental data.