The Thermohydraulic Characteristics of Two-Phase Flow in Extremely Narrow Channels (The Frictional Pressure Drop and Void Fraction of Adiabatic Two-Component Two-Phase Flow)

Abstract

Flow pattern, presure drop, void fraction, and phase velocity are measured for N2-113 adiabatic gas-liquid two-phase flow in extremely narrow channels with a thickness of 5-100 μm between horizontal parallel plates. It is clarified from the experiments that the friction multiplier of two-phase flow is smaller than Chisholm's correlation applied for normally sized channels, and that the void fraction becomes smaller as the channel becomes narrower. Empirical correlations are proposed. © 1992, The Japan Society of Mechanical Engineers. All rights reserved.