A Study of Void Fraction with Two-phase Flow in Large Diameter Pipe by Using Drift-flux Theory

摘要

In this paper, we evaluate six different correlations which are based on the drift-flux theory by comparing them with data from a large-scale experimental facility. These correlations were obtained on the basis of two-phase flow data from small-diameter facilities. They are correlations developed by: Zuber and Findlay [12], Dix [9], Jowitt [13], Sonnenburg [14], Bestion [17] and Chexal-Lellouche [18]. The data used in the current evaluation were obtained from the large-scale facility at SINTEF, and covered a large range of pressures, flow rates and pipe inclinations. It is found that none of these correlations could predict the data reasonably well over the entire range of the pipe inclinations. On the basis of this evaluation, a new correlation was developed, which is also based on the concept of drift-flux model. The correlation fits the data verv well and is verv consistent.