Noise characteristics and volume fraction measurement model of two-phase gas-liquid flow

被引：0
|
作者：
Fang L. [1 ,2 ,3 ]
Zhao M. [1 ,2 ]
Yang Y. [1 ,2 ]
Li X. [1 ,2 ,3 ]
机构：
[1] College of Quality and Technology Supervising, Hebei University, Baoding
[2] Measuring Instruments and Systems Engineering Laboratory of Hebei Province, Baoding
[3] The Center of Measuring Instruments and Systems Engineering and Technology of Baoding, Baoding
来源：
Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2019年 / 40卷 / 08期
关键词：
Acoustic emission technology; CFD simulation; Energy eigenvalue; Flow noise; Gas-liquid two-phase flow; Porous plate; Volume fraction; Wavelet packet analysis;
D O I：
10.11990/jheu.201807015
中图分类号：
学科分类号：
摘要：
A noise-generating device suitable for two-phase gas-liquid flow was designed by combining a porous mesh with a porous plate. The device was used to study the noise signal characteristics of two-phase gas-liquid flow and to measure volume fraction. A novel device for the measurement of the volume fraction of porous hole plates was designed through CFD simulation. The flow field was rapidly adjusted to the equilibrium state, and the noise signal was outburst by installing the porous orifice plate in the tube to enable the accurate measurement of the gas-liquid volume fraction. Flow noise was detected by using acoustic emission technology. Numerous experiments were performed by using the two-phase gas-liquid flow test system of Hebei University, and the flow acoustic emission signal was extracted and analyzed by applying the modern information processing method. The measurement models of the volume fraction of two-phase gas-liquid flow under bubbly, sluggish, and transition flow patterns were established. The absolute value of the relative error of the volume fraction was less than 4.8%. © 2019, Editorial Department of Journal of HEU. All right reserved.
引用
收藏
页码：1530 / 1536
页数：6
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