Experimental study of air-water and air-oil low liquid loading horizontal two-phase flow in pipes

摘要

Air-water horizontal two-phase flow experiments were performed on a 50.8-mm ID flow loop and a 149.6-mm ID flow loop at near atmospheric pressures. Air-mineral oil experiments were performed on the 50.8-mm ID flow loop at near atmospheric pressures. Three gas superficial velocities of 7.5, 10.5 and 13.5 m/s were used. Liquid loading level changed from approximately 100 to 5000 m{sup}3/MMm{sup}3 (liquid/gas). Pressure gradient, liquid hold-up, and wetted perimeter were measured in all the experiments. Liquid film thickness and interfacial liquid film velocity were measured on the 149.6-mm ID flow loop. Comparison between experimental data and existing model predictions shows large discrepancies in liquid hold-ups and pressure gradients. A new model is needed to better predict the low liquid loading flow behaviors.