Distribution of Entrainment Flow Rate for Air-Water Annular Two-Phase Flow in a Horizontal Tube

Abstract

An experimental investigation on the distribution of the entrainment flow rate in a horizontal annular two-phase flow was conducted. In this experiment, the isokinetic sampling probe technique was used for the measurement of the entrained droplet flow rate. It was demonstrated that the distribution of the entrained droplet flow rate was sensitive to the flow configuration, the total entrained droplet flow rate in the gas core was smaller than that of the vertical upward flow and the correlation of the entrainment flow rate proposed by Paleev et al. was superior to that by Wicks et al. Furthermore, a new correlation for the critical flow condition of the onset of droplet entrainment was proposed.