实验流体力学2013，Vol.27Issue(4)：40-44,5.
简谐摇摆运动下窄通道内空气-水两相流摩擦阻力
Frictional resistance of air-water two-phase flow in a narrow duct in harmonic rolling motion
摘要
Abstract
Narrow rectangular ducts have extensive application in compact heat exchangers design.The frictional resistance of air-water two-phase flow in narrow rectangular ducts under rolling condition is different from that under steady condition.The present work experimentally investigated the characteristics of frictional pressure drop of air-water two-phase flow in a narrow rectangular duct under rolling condition.The results show that the frictional pressure drop fluctuates with the same period of the rolling motion in laminar flow region (Rel ＜ 800) and transition flow region (800≤Rel≤1400),whereas it is nearly invariable in turbulent flow region (Rel ＞1400).Although the Lee-Lee model is well applied to predict the time-averaged frictional pressure drop under rolling condition,but inapplicable when the transient frictional pressure drop fluctuates periodically due to the rolling motion.A new correlation was achieved by modifying the Chisholm correlation on the basis of analyzing a large quantity of experimental pressure drop,showing good agreement with transient experimental data in rolling motion.关键词
摇摆运动/两相流/摩擦压降/矩形窄通道/Lee-Lee模型/奇斯霍姆参数CKey words
rolling motion / two-phase flow / frictional pressure drop / narrow rectangular duct /Lee-Lee model/Chisholm parameter C分类
能源科技引用本文复制引用
幸奠川,阎昌琪,孙立成,闫超星,金光远..简谐摇摆运动下窄通道内空气-水两相流摩擦阻力[J].实验流体力学,2013,27(4):40-44,5.基金项目
国家自然科学基金(11175050 （）
51076034) （）
