SCI和EI收录∣中国化工学会会刊

›› 2015, Vol. 23 ›› Issue (9): 1447-1452.DOI: 10.1016/j.cjche.2015.05.008

• 流体力学与传递现象 • 上一篇    下一篇

Measurment of gas-liquid two-phase slug flow with a Venturi meter based on blind source separation

Weiwei Wang, Xiao Liang, Mingzhu Zhang   

  1. College of Information and Control Engineering, China University of Petroleum, Qingdao 266580, China
  • 收稿日期:2014-12-21 修回日期:2015-05-22 出版日期:2015-09-28 发布日期:2015-10-24
  • 通讯作者: Weiwei Wang
  • 基金资助:
    Supported by the National Natural Science Foundation of China (51304231) and the Natural Science Foundation of Shandong Province (ZR2010EQ015).

Measurment of gas-liquid two-phase slug flow with a Venturi meter based on blind source separation

Weiwei Wang, Xiao Liang, Mingzhu Zhang   

  1. College of Information and Control Engineering, China University of Petroleum, Qingdao 266580, China
  • Received:2014-12-21 Revised:2015-05-22 Online:2015-09-28 Published:2015-10-24
  • Supported by:
    Supported by the National Natural Science Foundation of China (51304231) and the Natural Science Foundation of Shandong Province (ZR2010EQ015).

摘要: Wepropose a novel flowmeasurementmethod for gas-liquid two-phase slug flowby using the blind source separation technique. The flow measurementmodel is established based on the fluctuation characteristics of differential pressure (DP) signalsmeasured froma Venturimeter. It is demonstrated that DP signals of two-phase flow are a linear mixture of DP signals of single phase fluids. The measurementmodel is a combination of throttle relationship and blind source separation model. In addition,we estimate the mixturematrix using the independent component analysis (ICA) technique. The mixture matrix could be described using the variances of two DP signals acquired from two Venturi meters. The validity of the proposed model was tested in the gas-liquid twophase flow loop facility. Experimental results showed that for most slug flow the relative error is within 10%. We also find that the mixture matrix is beneficial to investigate the flow mechanism of gas-liquid two-phase flow.

关键词: Two-phase slug flow, Flow measurement, Differential pressure, Blind source separation, Independent component analysis

Abstract: Wepropose a novel flowmeasurementmethod for gas-liquid two-phase slug flowby using the blind source separation technique. The flow measurementmodel is established based on the fluctuation characteristics of differential pressure (DP) signalsmeasured froma Venturimeter. It is demonstrated that DP signals of two-phase flow are a linear mixture of DP signals of single phase fluids. The measurementmodel is a combination of throttle relationship and blind source separation model. In addition,we estimate the mixturematrix using the independent component analysis (ICA) technique. The mixture matrix could be described using the variances of two DP signals acquired from two Venturi meters. The validity of the proposed model was tested in the gas-liquid twophase flow loop facility. Experimental results showed that for most slug flow the relative error is within 10%. We also find that the mixture matrix is beneficial to investigate the flow mechanism of gas-liquid two-phase flow.

Key words: Two-phase slug flow, Flow measurement, Differential pressure, Blind source separation, Independent component analysis