空气-水两相水平流动空泡率测量及流型识别研究  

Void Fraction Measurements in Gas-Liquid Flows Using Capacitance Sensors and Flow Pattern Identification

作　　者：陈宏[1] 匡波[1] 杨扬 徐济鋆[1] 

机构地区：[1]上海交通大学核科学与系统工程系,200030

出　　处：《核动力工程》2003年第S2期105-108,共4页Nuclear Power Engineering

摘　　要：空泡率测量技术一直都是两相流测量所要解决的主要问题之一。作者开发了电容式空泡传感器,并完成了该传感器在空气-水水平流动工况下的标定实验,得到了空泡传感器在0.2～0.8范围内定标曲线。结果表明,该传感器灵敏度、线性度等性能均满足实用要求。定性讨论了不同流型下典型动态时序信号的差别与相应的流动现象与机理。与此同时,引入模式识别理论,采用动态聚类算法,实现了空气-水水平流动过程的离线工况识别。该工作可望为具有两相流动的工业过程的动态监控与故障诊断提供方便实用的手段。Measurement techniques of the void fraction are always one of the key factors among two-phase flow survey. The author completes the design of the senor and the calibration measurement. The calibration curve is obtained in the void fraction range between 0.2 and 0.8. The results show that the void sensor is with excellent sensitivity and linear output also. The acquired typical void fraction signal is presented and qualitative discussion to the dynamic process and mechanism of flow is hence delivered. Meanwhile, with the introduction of mode recognition theory, flow patterns are off-line recognized through dynamical clustering algorithm. It can be expected to offer a practical and convenient means to the dynamical monitoring, controlling and fault diagnosis of the equipment in which two-phase flow exists.

关 键 词：气液两相流 空泡率 电容式空泡传感器 标定 辨识 

分 类 号：O4-34[理学—物理]