Upward interfacial friction factor in gas and high-viscosity liquid flows in vertical pipes

Joseph Xavier Francisco Ribeiro, Ruiquan Liao, Aliyu Musa Aliyu, Zilong Liu

Research output: Contribution to journalArticle

Abstract

In this study, experiments were carried out in a vertical 60-mm internal diameter pipe with air and oil (viscosities 100–330 mPa s) constituting the gas and liquid phases. Superficial air and oil velocity ranges used were 9.81–59.06 m/s and 0.024–0.165 m/s, respectively. Visual observations and change in slope of pressure drop– Vsg plot were used to identify flow pattern transition to annular flow. Using the experimental data as well as other reported data, a new correlation to predict interfacial friction factor in upward gas–viscous liquid annular flow regime was developed. Compared to the performance of 16 existing correlations using higher viscosity liquids, that of the new correlation was better. The performance of another correlation we derived for predictions at both low and higher low viscous showed good agreement with measurements. In addition, a neural network model to predict the interfacial friction factor involving both low and high viscous liquids was developed and it excellently described the experimental data.

Original languageEnglish
JournalChemical Engineering Communications
Early online date29 Aug 2019
DOIs
Publication statusE-pub ahead of print - 29 Aug 2019
Externally publishedYes

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Gases
Pipe
Viscosity
Friction
Liquids
Oils
Air
Flow patterns
Pressure drop
Neural networks
Experiments

Cite this

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title = "Upward interfacial friction factor in gas and high-viscosity liquid flows in vertical pipes",
abstract = "In this study, experiments were carried out in a vertical 60-mm internal diameter pipe with air and oil (viscosities 100–330 mPa s) constituting the gas and liquid phases. Superficial air and oil velocity ranges used were 9.81–59.06 m/s and 0.024–0.165 m/s, respectively. Visual observations and change in slope of pressure drop– Vsg plot were used to identify flow pattern transition to annular flow. Using the experimental data as well as other reported data, a new correlation to predict interfacial friction factor in upward gas–viscous liquid annular flow regime was developed. Compared to the performance of 16 existing correlations using higher viscosity liquids, that of the new correlation was better. The performance of another correlation we derived for predictions at both low and higher low viscous showed good agreement with measurements. In addition, a neural network model to predict the interfacial friction factor involving both low and high viscous liquids was developed and it excellently described the experimental data.",
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Upward interfacial friction factor in gas and high-viscosity liquid flows in vertical pipes. / Ribeiro, Joseph Xavier Francisco; Liao, Ruiquan; Aliyu, Aliyu Musa; Liu, Zilong.

In: Chemical Engineering Communications, 29.08.2019.

Research output: Contribution to journalArticle

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AU - Ribeiro, Joseph Xavier Francisco

AU - Liao, Ruiquan

AU - Aliyu, Aliyu Musa

AU - Liu, Zilong

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