Relationships between Flow Configuration and Statistical Characteristics of Hold-up and Differential Pressure Fluctuations in Horizontal Annular Two-Phase Flow

Abstract

Horizontal annular flow was classified in detail into the following three flow configurations: the slug-like flow with frothy liquid lumps, disturbance wave and ripple flows. In this paper, it was shown that the kurtosis and skewness of the probability density function of time-varying hold-up depended on these flow configurations. However, successful results were not obtained for the pressure difference data. Relations between the kurtosis and volume flow quality are proposed for the criteria of boundaries between these flow configurations of annular flow.