Abbagoni, Baba MusaYeung, HoiLao, Liyun2022-01-072022-01-072021-10-28Abbagoni BM, Yeung H, Lao L. (2022) Non-invasive measurement of oil-water two-phase flow in vertical pipe using ultrasonic Doppler sensor and gamma ray densitometer. Chemical Engineering Science, Volume 248, Part B, February 2022, Article number 1172180009-2509https://doi.org/10.1016/j.ces.2021.117218http://dspace.lib.cranfield.ac.uk/handle/1826/17388Oil–water two-phase flow experiments were conducted in a vertical pipe to study the liquid–liquid flow measurement using a non-invasive ultrasound Doppler flow sensor and a gamma-ray densitometer. Tap water and a dyed mineral oil are used as test the fluids. A novel Doppler effect strategy is used to estimate the mixture flow velocity in a vertical pipe based on flow velocity measured by the ultrasound sensor and the shear flow velocity profile model. Drift-flux flow model was used in conjunction phase fractions to predict the superficial velocities of oil and water. The results indicate that the proposed method estimated oil-continuous flow and water-continuous flow have average relative errors of 5.2% and 4.5%; and superficial phase flow velocities of oil and of water have average relative errors of 4.5% and 5.9% respectively. These results demonstrate the potential for using ultrasonic Doppler sensor combined with gamma densitometer for oil–water measurement.enAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/Liquid-liquid flowDrift-flux modelVelocity profileWater fractionphase superficial velocityArticle