Twin Fiber Optic Liquid Film Sensor for Simultaneous Measurement of Local Film Thickness and Interfacial Wave Velocity
Twin Fiber Optic Liquid Film Sensor for Simultaneous Measurement of Local Film Thickness and Interfacial Wave Velocity
复制标题
用于同时测量局部膜厚度和界面波速的双光纤液膜传感器
DOI：
10.3811/jjmf.3.50
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
N. Kawakami
中科院分区：
文献类型：
--
作者：
K. Ohba;H. Takada;N. Kawakami
研制了一种双光纤光学液膜传感器系统，可同时测量气液两相环状流中液膜的局部厚度和界面波速。该传感器系统由两个独立的单光纤传感器组成。每个单光纤传感器只能区分界面波的波峰和波谷，并可以测量这些部分的膜厚。通过飞行时间法测量了界面波的传播速度。模拟实验和对实际垂直管内空气-水环形两相流的应用表明，该传感器系统可以同时精确测量液膜的局部厚度和界面波速。
A twin fiber otpic liquid film sensor system has been developed, which is able to measure the local thickness and the interfacial wave velocity of liquid film in gas-liquid annular two-phase flows simultaneously. This sensor system consists of two independent mono-fiber optic sensors. Each mono-fiber optic sensor can distinguish only the crest and the trough of the interfacial wave and can measure the film thickness at these parts. A propagation velocity of the interfacial wave has been measured by a time-of-flight method. Both simulation experiments and applications of this sensor system to an actual air-water annular two-phase flow in a vertical tube have shown that the simultaneous measurements of the local thickness and the interfacial wave velocity of the liquid film can be done accurately.