Measurement of water velocity in gas–water two-phase flow with the combination of electromagnetic flowmeter and conductance sensor
Sensors (Switzerland), ISSN: 1424-8220, Vol: 20, Issue: 11
2020
- 15Citations
- 11Captures
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Metrics Details
- Citations15
- Citation Indexes15
- 15
- CrossRef14
- Captures11
- Readers11
- 11
Article Description
A method to measure the superficial velocity of the water phase in gas–water flow using an electromagnetic flowmeter (EMF) and rotating electric field conductance sensors (REFCSs) is introduced in this paper. An electromagnetic flowmeter instrument factor model is built and the correlation between electromagnetic flowmeter output and gas holdup in different flow patterns are explored through vertical upward gas–water flow dynamic experiments in a pipe with an inner diameter (ID) of 20 mm. Water superficial velocity is predicted based on pattern identification among bubble, churn, and slug flows. The experimental results show that water superficial velocity can be predicted fairly accurately for bubble, churn, and slug flows with a water cut higher than 60% (absolute average percentage deviation and absolute average deviation are 4.1057% and 0.0281 m/s, respectively). The output of the electromagnetic flowmeter is unstable and invalid in slug flows with a water cut below 60% due to the non-conducting gas slug is almost filling the pipe. Therefore, the electromagnetic flowmeter is not preferred to be used in such conditions.
Bibliographic Details
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