| Measurment of gas-liquid two-phase slug flow with a Venturi meter based on blind source separation☆ |
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| 作者姓名： | Weiwei Wang Xiao Liang Mingzhu Zhang |
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| 作者单位： | College of Information and Control Engineering, China University of Petroleum, Qingdao 266580, China |
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| 基金项目： | Supported by the National Natural Science Foundation of China (51304231) and the Natural Science Foundation of Shandong Province (ZR2010EQ015). |
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| 摘 要： | We propose a novel flow measurement method for gas–liquid two-phase slug flow by using the blind source sep-aration technique. The flow measurement model is established based on the fluctuation characteristics of differ-ential pressure (DP) signals measured from a Venturi meter. It is demonstrated that DP signals of two-phase flow are a linear mixture of DP signals of single phase fluids. The measurement model is a combination of throttle re-lationship and blind source separation model. In addition, we estimate the mixture matrix using the independent component analysis (ICA) technique. The mixture matrix could be described using the variances of two DP sig-nals acquired from two Venturi meters. The validity of the proposed model was tested in the gas–liquid two-phase 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.
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| 关 键 词： | Two-phase slug flow Flow measurement Differential pressure Blind source separation Independent component analysis |
| 收稿时间： | 2014-12-21 |
Measurment of gas-liquid two-phase slug flow with a Venturi meter based on blind source separation |
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| Weiwei Wang,Xiao Liang,Mingzhu Zhang.Measurment of gas-liquid two-phase slug flow with a Venturi meter based on blind source separation[J].Chinese Journal of Chemical Engineering,2015,23(9):1447-1452. |
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| Authors: | Weiwei Wang Xiao Liang Mingzhu Zhang |
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| Affiliation: | College of Information and Control Engineering, China University of Petroleum, Qingdao 266580, China |
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| Abstract: | We propose a novel flow measurement method for gas–liquid two-phase slug flow by using the blind source sep-aration technique. The flow measurement model is established based on the fluctuation characteristics of differ-ential pressure (DP) signals measured from a Venturi meter. It is demonstrated that DP signals of two-phase flow are a linear mixture of DP signals of single phase fluids. The measurement model is a combination of throttle re-lationship and blind source separation model. In addition, we estimate the mixture matrix using the independent component analysis (ICA) technique. The mixture matrix could be described using the variances of two DP sig-nals acquired from two Venturi meters. The validity of the proposed model was tested in the gas–liquid two-phase 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. |
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| Keywords: | Two-phase slug flow Flow measurement Differential pressure Blind source separation Independent component analysis |
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