A New Contactless Cross-Correlation Velocity Measurement System for Gas–Liquid Two-Phase Flow
Based on the principle of Contactless Conductivity Detection (CCD), a new contactless cross-correlation velocity measurement system with a three-electrode construction is developed in this work and applied to the contactless velocity measurement of gas–liquid two-phase flow in small channels. To ach...
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MDPI AG
2023-05-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/10/4886 |
| _version_ | 1797598340671602688 |
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| author | Bixia Sheng Junchao Huang Haifeng Ji Zhiyao Huang |
| author_facet | Bixia Sheng Junchao Huang Haifeng Ji Zhiyao Huang |
| author_sort | Bixia Sheng |
| collection | DOAJ |
| description | Based on the principle of Contactless Conductivity Detection (CCD), a new contactless cross-correlation velocity measurement system with a three-electrode construction is developed in this work and applied to the contactless velocity measurement of gas–liquid two-phase flow in small channels. To achieve a compact design and to reduce the influence of the slug/bubble deformation and the relative position change on the velocity measurement, an electrode of the upstream sensor is reused as an electrode of the downstream sensor. Meanwhile, a switching unit is introduced to ensure the independence and consistency of the upstream sensor and the downstream sensor. To further improve the synchronization of the upstream sensor and the downstream sensor, fast switching and time compensation are also introduced. Finally, with the obtained upstream and downstream conductance signals, the velocity measurement is achieved by the principle of cross-correlation velocity measurement. To test the measurement performance of the developed system, experiments are carried out on a prototype with a small channel of 2.5 mm. The experimental results show that the compact design (three-electrode construction) is successful, and its measurement performance is satisfactory. The velocity range for the bubble flow is 0.312–0.816 m/s, and the maximum relative error of the flow rate measurement is 4.54%. The velocity range for the slug flow is 0.161 m/s–1.250 m/s, and the maximum relative error of the flow rate measurement is 3.70%. |
| first_indexed | 2024-03-11T03:20:52Z |
| format | Article |
| id | doaj.art-dfb2ed7f688e4e9692023e408a5e9c63 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-11T03:20:52Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-dfb2ed7f688e4e9692023e408a5e9c632023-11-18T03:14:05ZengMDPI AGSensors1424-82202023-05-012310488610.3390/s23104886A New Contactless Cross-Correlation Velocity Measurement System for Gas–Liquid Two-Phase FlowBixia Sheng0Junchao Huang1Haifeng Ji2Zhiyao Huang3State Key Laboratory of Industrial Control Technology, College of Control Science and Engineering, Zhejiang University, Hangzhou 310027, ChinaState Key Laboratory of Industrial Control Technology, College of Control Science and Engineering, Zhejiang University, Hangzhou 310027, ChinaState Key Laboratory of Industrial Control Technology, College of Control Science and Engineering, Zhejiang University, Hangzhou 310027, ChinaState Key Laboratory of Industrial Control Technology, College of Control Science and Engineering, Zhejiang University, Hangzhou 310027, ChinaBased on the principle of Contactless Conductivity Detection (CCD), a new contactless cross-correlation velocity measurement system with a three-electrode construction is developed in this work and applied to the contactless velocity measurement of gas–liquid two-phase flow in small channels. To achieve a compact design and to reduce the influence of the slug/bubble deformation and the relative position change on the velocity measurement, an electrode of the upstream sensor is reused as an electrode of the downstream sensor. Meanwhile, a switching unit is introduced to ensure the independence and consistency of the upstream sensor and the downstream sensor. To further improve the synchronization of the upstream sensor and the downstream sensor, fast switching and time compensation are also introduced. Finally, with the obtained upstream and downstream conductance signals, the velocity measurement is achieved by the principle of cross-correlation velocity measurement. To test the measurement performance of the developed system, experiments are carried out on a prototype with a small channel of 2.5 mm. The experimental results show that the compact design (three-electrode construction) is successful, and its measurement performance is satisfactory. The velocity range for the bubble flow is 0.312–0.816 m/s, and the maximum relative error of the flow rate measurement is 4.54%. The velocity range for the slug flow is 0.161 m/s–1.250 m/s, and the maximum relative error of the flow rate measurement is 3.70%.https://www.mdpi.com/1424-8220/23/10/4886cross-correlation velocity measurementgas–liquid two-phase flowsmall channelcontactless conductivity detection (CCD) |
| spellingShingle | Bixia Sheng Junchao Huang Haifeng Ji Zhiyao Huang A New Contactless Cross-Correlation Velocity Measurement System for Gas–Liquid Two-Phase Flow Sensors cross-correlation velocity measurement gas–liquid two-phase flow small channel contactless conductivity detection (CCD) |
| title | A New Contactless Cross-Correlation Velocity Measurement System for Gas–Liquid Two-Phase Flow |
| title_full | A New Contactless Cross-Correlation Velocity Measurement System for Gas–Liquid Two-Phase Flow |
| title_fullStr | A New Contactless Cross-Correlation Velocity Measurement System for Gas–Liquid Two-Phase Flow |
| title_full_unstemmed | A New Contactless Cross-Correlation Velocity Measurement System for Gas–Liquid Two-Phase Flow |
| title_short | A New Contactless Cross-Correlation Velocity Measurement System for Gas–Liquid Two-Phase Flow |
| title_sort | new contactless cross correlation velocity measurement system for gas liquid two phase flow |
| topic | cross-correlation velocity measurement gas–liquid two-phase flow small channel contactless conductivity detection (CCD) |
| url | https://www.mdpi.com/1424-8220/23/10/4886 |
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