Prediction of the entrained liquid fraction in vertical annular gas-liquid two-phase flow

Andrea Cioncolini; John R. Thome

doi:10.1016/j.ijmultiphaseflow.2009.11.011

Prediction of the entrained liquid fraction in vertical annular gas-liquid two-phase flow

Andrea Cioncolini, John R. Thome^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

70 Scopus citations

Abstract

The study considers the prediction of the entrained liquid fraction in adiabatic gas-liquid annular two-phase flow in vertical pipes. Nine empirical correlations have been tested against an experimental data bank drawn together in this study containing 1504 points for 8 different gas-liquid combinations and 19 different tube diameters from 5.00 mm to 57.1 mm. The correlation of Sawant, Ishii and Mishima and the one of Oliemans, Pots and Trompé were found to best reproduce the available data. A new correlating approach, derived from both physical intuition and dimensional analysis and capable of providing further physical insight into the liquid film atomization process, was proposed and worked better than any of the existing methods. This new correlation is based on the core flow Weber number that is also a controlling dimensionless group in determining the wall shear stress and associated frictional pressure gradient of annular flows.

Original language	English
Pages (from-to)	293-302
Number of pages	10
Journal	International Journal of Multiphase Flow
Volume	36
Issue number	4
DOIs	https://doi.org/10.1016/j.ijmultiphaseflow.2009.11.011
State	Published - Apr 2010
Externally published	Yes

Keywords

Annular two-phase flow
Entrained liquid fraction
Entrainment
Liquid film atomization

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10.1016/j.ijmultiphaseflow.2009.11.011

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title = "Prediction of the entrained liquid fraction in vertical annular gas-liquid two-phase flow",

abstract = "The study considers the prediction of the entrained liquid fraction in adiabatic gas-liquid annular two-phase flow in vertical pipes. Nine empirical correlations have been tested against an experimental data bank drawn together in this study containing 1504 points for 8 different gas-liquid combinations and 19 different tube diameters from 5.00 mm to 57.1 mm. The correlation of Sawant, Ishii and Mishima and the one of Oliemans, Pots and Tromp{\'e} were found to best reproduce the available data. A new correlating approach, derived from both physical intuition and dimensional analysis and capable of providing further physical insight into the liquid film atomization process, was proposed and worked better than any of the existing methods. This new correlation is based on the core flow Weber number that is also a controlling dimensionless group in determining the wall shear stress and associated frictional pressure gradient of annular flows.",

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AU - Thome, John R.

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AB - The study considers the prediction of the entrained liquid fraction in adiabatic gas-liquid annular two-phase flow in vertical pipes. Nine empirical correlations have been tested against an experimental data bank drawn together in this study containing 1504 points for 8 different gas-liquid combinations and 19 different tube diameters from 5.00 mm to 57.1 mm. The correlation of Sawant, Ishii and Mishima and the one of Oliemans, Pots and Trompé were found to best reproduce the available data. A new correlating approach, derived from both physical intuition and dimensional analysis and capable of providing further physical insight into the liquid film atomization process, was proposed and worked better than any of the existing methods. This new correlation is based on the core flow Weber number that is also a controlling dimensionless group in determining the wall shear stress and associated frictional pressure gradient of annular flows.

KW - Annular two-phase flow

KW - Entrained liquid fraction

KW - Entrainment

KW - Liquid film atomization

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DO - 10.1016/j.ijmultiphaseflow.2009.11.011

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SN - 0301-9322

VL - 36

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EP - 302

JO - International Journal of Multiphase Flow

JF - International Journal of Multiphase Flow

IS - 4

ER -

Prediction of the entrained liquid fraction in vertical annular gas-liquid two-phase flow

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Keywords

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