Phase identification by a novel needle-contact capacitance probe in gas-liquid two-phase flows

作     者：HUANG Shanfang LU Jun ZHANG Bingdong WANG Dong 

作者机构：Department of Engineering Physics Tsinghua University Beijing 100084 China State Key Laboratory of Multiphase Flow in Power Engineering Xi 'an Jiaotong University Xi'an 710049 China Beijing Aerospace Institute for Metrology and Measurement Technology Beijing 100076 China 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2010年第21卷第5期

页      面：316-320页

核心收录：

学科分类：080802[工学-电力系统及其自动化] 0808[工学-电气工程] 080704[工学-流体机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：Support by the National Natural Science Foundation of China (No. 51006068) 

主　　题：气液两相流 探头 接触式 鉴定 一阶 电导电极 水电导率 气泡速度 

摘      要：In this paper,we propose a novel probe to identify phases in any two-phase flows where one phase is conductive and the other *** can further obtain many parameters such as void fraction,bubble velocity,and interfacial area *** with the traditional probe,the novel probe has unique advantages that it is less dependent on water conductance or distance between the electrodes,and that the amplitude is bigger between high and low *** analyses showed that the measurement error became higher when water conductance decreases or distance increases,which is consistent with the theoretical *** results showed that the output signal kept constant with salt content of 0-5% and electrode distance of 0-30 mm in tap *** level difference was up to 6.4 V,resulting in identifying two phases *** traces of phase identification were completely consistent with the flow structures.