Development of gas-liquid slug flow measurement using continuous-wave Doppler ultrasound and bandpass power spectral density

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dc.contributor.authorNnabuife, Somtochukwu Godfrey
dc.contributor.authorSharma, Prafull
dc.contributor.authorAburime, Ebuwa Iyore
dc.contributor.authorLong’or Lokidor, Pauline
dc.contributor.authorBello, Abdulrauf
dc.date.accessioned2021-04-06T11:01:41Z
dc.date.available2021-04-06T11:01:41Z
dc.date.issued2021-01-08
dc.description.abstractThis paper addresses the issues of slug detection and characterization in air-water two-phase flow in a vertical pipeline. A novel non-invasive measurement technique using continuous-wave Doppler ultrasound (CWDU) and bandpass power spectral density (BPSD) is proposed for multiphase flow applications and compared with the more established gamma-ray densitometry measurement. In this work, analysis using time-frequency analysis of the CWDU is performed to infer the applicability of the BPSD method for observing the slug front and trailing bubbles in a multiphase flow. The CWDU used a piezo transmitter/receiver pair with an ultrasonic frequency of 500 kHz. Signal processing on the demodulated signal of Doppler frequency was done using the Butterworth bandpass filter on the power spectral density which reveals slugs from background bubbles. The experiments were carried out in the 2” vertical pipeline-riser at the process system engineering laboratory at Cranfield University. The 2-inch test facility used in this experiment is made up of a 54.8 mm internal diameter and 10.5 m high vertical riser connected to a 40 m long horizontal pipeline. Taylor bubbles were generated using a quick-closing air valve placed at the bottom of the riser underwater flow, with rates of 0.5 litres/s, 2 litres/s, and 4 litres/s. The CWDU spectrum of the measured signal along with the BPSD method is shown to describe the distinctive nature of the slugsen_UK
dc.identifier.citationNnabuife SG, Sharma P, Iyore Aburime E, et al., (2021) Development of gas-liquid slug flow measurement using continuous-wave Doppler ultrasound and bandpass power spectral density. ChemEngineering, Volume 5, Issue 1, January 2021, Article number 2en_UK
dc.identifier.issn2305-7084
dc.identifier.urihttps://doi.org/10.3390/chemengineering5010002
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/16541
dc.language.isoenen_UK
dc.publisherMDPIen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectmultiphase flow measurementen_UK
dc.subjectflow regimeen_UK
dc.subjectvertical riseren_UK
dc.subjectspectral kurtosisen_UK
dc.subjectbandpass power spectral density (BPSD)en_UK
dc.subjectcontinuous-wave Doppler ultrasound (CWDU)en_UK
dc.titleDevelopment of gas-liquid slug flow measurement using continuous-wave Doppler ultrasound and bandpass power spectral densityen_UK
dc.typeArticleen_UK

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