Measurement of gas and liquid flow rates in two-phase pipe flows with distributed acoustic sensing

IF 5.2 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Measurement Pub Date : 2025-02-27 DOI:10.1016/j.measurement.2025.117137

Kun-peng Zhang , Hao-chu Ku , Xiang-ge He , Hai-long Lu , Min Zhang , Chao-bin Guo

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引用次数: 0

Abstract

Accurately measuring gas–liquid two-phase flow rates in pipelines is critical for optimizing production processes. Distributed Acoustic Sensing (DAS) has emerged as a promising technique for conducting long-term measurements of pipeline flow rates. The effectiveness of DAS in measuring two-phase flow rates is evaluated in this study. An experimental setup was designed to simulate a gas–liquid two-phase flow, employing DAS to detect acoustic signals along its length. Based on the results, a method for measuring single-phase and two-phase flow rates with DAS was developed. Key findings include: (1) As flow rates increase, the vibrational energy the flow induces also rises. Vibrational energy from single-phase gas flow is significantly weaker than that from liquid-containing flows. (2) An increase in liquid flow rate results in a negative shift in the detected characteristic operating frequency. (3) The spectrum reveals two dominant frequency bands, with low liquid and gas flow rates exhibiting narrower main bands, lower energy levels, and strong autocorrelation.

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精确测量管道中的气液两相流量对于优化生产流程至关重要。分布式声学传感技术（DAS）已成为对管道流速进行长期测量的一项前景广阔的技术。本研究评估了 DAS 在测量两相流速方面的有效性。我们设计了一套实验装置来模拟气液两相流，并利用 DAS 探测管道沿线的声学信号。根据研究结果，开发了一种利用 DAS 测量单相和两相流速的方法。主要发现包括(1) 随着流速的增加，流动引起的振动能量也会增加。单相气体流动产生的振动能量明显弱于含液体流动产生的振动能量。(2) 液体流速的增加会导致检测到的特征工作频率发生负偏移。(3) 频谱显示出两个主要频带，低液体和气体流速显示出更窄的主频带、更低的能级和更强的自相关性。

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来源期刊

Measurement 工程技术-工程：综合

CiteScore

10.20

自引率

12.50%

发文量

1589

审稿时长

12.1 months

期刊介绍： Contributions are invited on novel achievements in all fields of measurement and instrumentation science and technology. Authors are encouraged to submit novel material, whose ultimate goal is an advancement in the state of the art of: measurement and metrology fundamentals, sensors, measurement instruments, measurement and estimation techniques, measurement data processing and fusion algorithms, evaluation procedures and methodologies for plants and industrial processes, performance analysis of systems, processes and algorithms, mathematical models for measurement-oriented purposes, distributed measurement systems in a connected world.