摘要
利用管内气液两相弹状流中因气弹周围液膜加速、减速所致的波动差压，实验测量了气弹速度、气弹长度以及气弹尾流作用长度等参数，并利用气弹尾流气泡群在尾流瞬变压力激励下所辐射的声波及其频谱，对尾流气泡群的最可几尺寸进行了测量．实验结果及误差分析表明，该测量方法比传统方法在无流场干扰、测量结果多样性等方面显示出较强优越性．
Slug velocity and length measurements are made from the acceleration and deceleration characteristics of a liquid film around a vertical gas slug. The unsteady disturbance is induced by the differential pressure fluctuation which determines the length of the wake flow behind the slug. The probable size of the bubbles in the wake region is estimated from the amplitude spectrum of sound radiated from the trailing bubbles. No disturbance to the flow field is observed from the measuring instruments and the technique is not restricted to environment constraints.
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
1998年第10期22-25,共4页
Journal of Xi'an Jiaotong University
基金
中国博士后科学基金
关键词
弹状流
尾流气泡
两相流
气弹
瞬态测量
slug flow velocity of gas slug length of gas slug differential pressure measurement trailing bubbles most probable bubble size sound radiation measurement
