文章基本信息

标题：Comparative evaluation of homogenous and drift-flux models for a three-phase downward flow in a pipe
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作者：Fidelis I. Abam ; Ntunde I. Dilibe ; Bethrand N. Nwankwojike 等
期刊名称：Scientific African
印刷版ISSN：2468-2276
出版年度：2021
卷号：13
页码：1-11
DOI：10.1016/j.sciaf.2021.e00898
语种：English
出版社：Elsevier
摘要：AbstractThe paper presents the comparative evaluation of the homogenous and the drift-flux flow modelling techniques employed in a three-phase downward flow in a vertical pipe. The study's objective is to analyse and compare the pressure drop of an experimental procedure of three-phase flow in a downward vertical pipe based on the two modelling techniques. The considered fluids include CO2gas and the homogenous water and oil phases. The results show that the CO2gas and the homogenous water and oil phases' velocities were obtained between 0.452 and 32.868 m/s and 0.008889 and 13.0734 m/s at 20, 50, 70 and 90% water cuts (WCs), respectively. On the other hand, the pressure drop (PD) ranged between336.75≤PD≤4570.431 N/m3and27.741≤PD≤−2176.769 N/m3for the homogenous and drift-flux models. A comparative evaluation between the two models established an excellent agreement with over-prediction. Additionally, at all WCs, the total PD shows an over-prediction of 8.685 % for the homogenous model and an under-prediction of 12.91% for the drift-flux. Hence, the homogenous modelling technique gave a higher efficiency and was recommended for the determination of the total pressure drop. Conversely, the drift-flux model was established to precisely determine the effect of single-phase flow properties on the total pressure drop of the flow process. The findings further provided a comprehensive understanding of introducing CO2gas in a three-phase downward flow process to meet the demands of emerging technologies.
关键词：KeywordsThree-phasePressure dropHomogenousVolume fractionDrift fluxWater-cuts