STUDY ON MECHANISM OF HYDRODYNAMIC OSCILLATION IN VORTEX PRECESSION METER USING LARGE EDDY SIMULATION

被引：0
|
作者：
Fu Xin Yang Huayong State Key Laboratory of Fluid Power Transmission and Control
机构：
来源：
Chinese Journal of Mechanical Engineering(English Edition) | 2001年 / 01期
关键词：
Flow measurement Vortex precession Hydrodynamic oscillation Flow visualization;
D O I：
暂无
中图分类号：
TB123 [工程振动学];
学科分类号：
摘要：
In order to improve the anti jamming performance of a vortex precession meter, the disciplinarian of the vortex precession and the mechanism of hydrodynamic oscillation inside the vortex precession meter are numerically investigated by using the large eddy simulation The results show that the periodical eccentric motion of the vortexes initiates a hydrodynamic oscillation inside the vortex precession meter The visualized time dependent flow fields indicate that the pressures at axisymmetric points oscillate with a same intensity and frequency but 180° phase shift By using differential sensing technique,a new prototype of double sensor vortex precession meter,aimed to improve measurement accuracy, is developed
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页码：9 / 11
页数：3
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