摘要
本文设计了一套用于小通道气液两相流的电容测量系统,并对内径为1.56 mm、2.65 mm和3.96 mm的玻璃管气液两相流进行了实验研究.文中首先对电容方法在小通道下的应用做了探索性尝试,设计了用于小通道气液两相流的电容传感器;然后利用所设计的电容传感器对小通道气液两相流弹状流电容动态数据进行采集、处理和分析;最后利用相关原理对气弹速度的测量进行了研究。研究结果表明所提出的电容方法可用于小通道气液两相流的分析研究中,是一种有效的小通道气液两相流参数检测手段,并为小通道两相流检测的研究提供了一定的借鉴.
An electrical capacitance measurement system for gas-liquid two-phase flow in small channel is developed, and the experimental study is carried out in the small channel with inner diameters of 1.56 mm, 2.65 mm and 3.96 mm respectively. The electrical capacitance sensor is designed for the small channel, and the signals are obtained and analyzed. The velocity of gas slug is calculated by the crosscorrelation method using two identical capacitance sensors equipped on the upstream and downstream of small channel respectively, and the calculated velocity is consistent with the reference velocity obtained by CCD camera. The experimental results show that the presented electrical capacitance measurement system is effective and can be used in the measurement of two-phase flow in small channel.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2009年第3期441-444,共4页
Journal of Engineering Thermophysics
关键词
气液两相流
小通道
电容
弹状流
gas-liquid two-phase flow
small channel
electrical capacitance
slug flow
