A Three-Dimensional Model of Turbulent Core Annular Flow Regime

In this study, three-dimensional (3D) turbulent core annular flow (CAF) regime is investigated numerically. The proposed model is based on the 3D Reynolds average Navier–Stokes (RANS) equations combined with a pure convective transport equation of the volume of fluid (VOF) to predict the interface b...

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Autores principales:	Saliha Nouri, Zouhaier Hafsia, Salah Mahmoud Boulaaras, Ali Allahem, Salem Alkhalaf, Baowei Feng
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Mathematics QA1-939
Acceso en línea:	https://doaj.org/article/6c79f771e97b4b4897582db16882e8af
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spelling	oai:doaj.org-article:6c79f771e97b4b4897582db16882e8af2021-11-08T02:36:50ZA Three-Dimensional Model of Turbulent Core Annular Flow Regime2314-478510.1155/2021/5296700https://doaj.org/article/6c79f771e97b4b4897582db16882e8af2021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/5296700https://doaj.org/toc/2314-4785In this study, three-dimensional (3D) turbulent core annular flow (CAF) regime is investigated numerically. The proposed model is based on the 3D Reynolds average Navier–Stokes (RANS) equations combined with a pure convective transport equation of the volume of fluid (VOF) to predict the interface between the oil and water phases. The k-ω turbulence model is adopted to better reproduce the oil and water flow characteristics. The two-phase (CAF) regime can be predicted by two inlet configurations: the T-junction (3D-T) and the straight pipe (3D-S). These two configurations are simulated and compared for pipe diameter D=0.026 m and pipe length L=4 m. For these two inlet configurations, the computed mixture velocity profile and the water volume fraction at a test section z=100 D were compared to experimental measurements. The 3D-T configuration gives more appropriate results. The 3D-S slightly overestimates the maximum velocity at the test section and the lower and upper water layer of the (CAF) flow is shifted in the upward direction. For the 3D-T, the relative error in the pressure drop is 3.3%. However, for the 3D-S, this error is 13.0%.Saliha NouriZouhaier HafsiaSalah Mahmoud BoulaarasAli AllahemSalem AlkhalafBaowei FengHindawi LimitedarticleMathematicsQA1-939ENJournal of Mathematics, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Mathematics QA1-939
spellingShingle	Mathematics QA1-939 Saliha Nouri Zouhaier Hafsia Salah Mahmoud Boulaaras Ali Allahem Salem Alkhalaf Baowei Feng A Three-Dimensional Model of Turbulent Core Annular Flow Regime
description	In this study, three-dimensional (3D) turbulent core annular flow (CAF) regime is investigated numerically. The proposed model is based on the 3D Reynolds average Navier–Stokes (RANS) equations combined with a pure convective transport equation of the volume of fluid (VOF) to predict the interface between the oil and water phases. The k-ω turbulence model is adopted to better reproduce the oil and water flow characteristics. The two-phase (CAF) regime can be predicted by two inlet configurations: the T-junction (3D-T) and the straight pipe (3D-S). These two configurations are simulated and compared for pipe diameter D=0.026 m and pipe length L=4 m. For these two inlet configurations, the computed mixture velocity profile and the water volume fraction at a test section z=100 D were compared to experimental measurements. The 3D-T configuration gives more appropriate results. The 3D-S slightly overestimates the maximum velocity at the test section and the lower and upper water layer of the (CAF) flow is shifted in the upward direction. For the 3D-T, the relative error in the pressure drop is 3.3%. However, for the 3D-S, this error is 13.0%.
format	article
author	Saliha Nouri Zouhaier Hafsia Salah Mahmoud Boulaaras Ali Allahem Salem Alkhalaf Baowei Feng
author_facet	Saliha Nouri Zouhaier Hafsia Salah Mahmoud Boulaaras Ali Allahem Salem Alkhalaf Baowei Feng
author_sort	Saliha Nouri
title	A Three-Dimensional Model of Turbulent Core Annular Flow Regime
title_short	A Three-Dimensional Model of Turbulent Core Annular Flow Regime
title_full	A Three-Dimensional Model of Turbulent Core Annular Flow Regime
title_fullStr	A Three-Dimensional Model of Turbulent Core Annular Flow Regime
title_full_unstemmed	A Three-Dimensional Model of Turbulent Core Annular Flow Regime
title_sort	three-dimensional model of turbulent core annular flow regime
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/6c79f771e97b4b4897582db16882e8af
work_keys_str_mv	AT salihanouri athreedimensionalmodelofturbulentcoreannularflowregime AT zouhaierhafsia athreedimensionalmodelofturbulentcoreannularflowregime AT salahmahmoudboulaaras athreedimensionalmodelofturbulentcoreannularflowregime AT aliallahem athreedimensionalmodelofturbulentcoreannularflowregime AT salemalkhalaf athreedimensionalmodelofturbulentcoreannularflowregime AT baoweifeng athreedimensionalmodelofturbulentcoreannularflowregime AT salihanouri threedimensionalmodelofturbulentcoreannularflowregime AT zouhaierhafsia threedimensionalmodelofturbulentcoreannularflowregime AT salahmahmoudboulaaras threedimensionalmodelofturbulentcoreannularflowregime AT aliallahem threedimensionalmodelofturbulentcoreannularflowregime AT salemalkhalaf threedimensionalmodelofturbulentcoreannularflowregime AT baoweifeng threedimensionalmodelofturbulentcoreannularflowregime
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A Three-Dimensional Model of Turbulent Core Annular Flow Regime

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