Measurement of phase distribution in a triangular conduit

Abstract Measurements of phase-distribution phenomena were made for fully developed. turbulent air/water two-phase flow in a vertical isosceles-triangular test section. These measurements included the local void-fraction and liquid-phase velocity using an RF-excited local impedance probe and Pitot tube. respectively. It was found that substantial lateral “void drift” occurred. with the vapor phase collecting in the more open. high-velocity. region of the test section.