A fully developed two -phase flow model in vertical channels for bubbly and slug flow regimes

摘要

A theoretical model for steady state two-phase vertical upward flow in cylindrical channels is presented. A comparison of the results of this model for a cricular channel as well as a reformulated rectangular channel model is partially made with experimental dat ain the literature. It shows that in general the model predicts the flow characteristics somewhat better in the bubbly regime than the slug flow indicating the need to look further into some of the constitutive relationships used to close the model in this regime.