PREDICTION OF TURBULENT, STRATIFIED, 2-PHASE FLOW IN INCLINED PIPES AND CHANNELS

A method for the prediction of fully-developed, turbulent, stratified, two-phase flow in horizontal and inclined pipes and channels is presented. The method solves the two-dimensional momentum equations for both phases and accounts for the effects of turbulence through the use of the two-equation model of turbulence. The circular geometry of pipe cross-sections is accommodated with the aid of a bipolar coordinate system which fits the pipe wall as well as the interface. Predictions with the technique are compared with the results of other methods and with experimental data for both pipe and rectangular channel geometries.