Axial Development of Gas-Liquid Flow Parameters in a Narrow Rectangular Channel

摘要

The axial developments of void fraction, IAC, gas velocity, Sauter mean diameter, bubble number density and frictional pressure loss were measured by using thernimage processing technique and a differential pressure cell and a database for the two-phase flow in a narrow rectangular channel was established. It was identified that the bubble coalescence near the inlet was significant and the bubble expansion dominates the interfacial area transport after a certain downstream location.