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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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Journal of Mathematics |
| Online Access: | http://dx.doi.org/10.1155/2021/5296700 |
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| 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 |
| collection | DOAJ |
| 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 |
| id | doaj-art-6c79f771e97b4b4897582db16882e8af |
| institution | Kabale University |
| issn | 2314-4785 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Mathematics |
| spelling | doaj-art-6c79f771e97b4b4897582db16882e8af2025-02-03T05:49:26ZengWileyJournal of Mathematics2314-47852021-01-01202110.1155/2021/5296700A Three-Dimensional Model of Turbulent Core Annular Flow RegimeSaliha Nouri0Zouhaier Hafsia1Salah Mahmoud Boulaaras2Ali Allahem3Salem Alkhalaf4Baowei Feng5Department of PhysicsDepartment of PhysicsDepartment of MathematicsDepartment of MathematicsDepartment of Computer ScienceDepartment Economic MathematicsIn 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%.http://dx.doi.org/10.1155/2021/5296700 |
| spellingShingle | Saliha Nouri Zouhaier Hafsia Salah Mahmoud Boulaaras Ali Allahem Salem Alkhalaf Baowei Feng A Three-Dimensional Model of Turbulent Core Annular Flow Regime Journal of Mathematics |
| title | 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_short | A Three-Dimensional Model of Turbulent Core Annular Flow Regime |
| title_sort | three dimensional model of turbulent core annular flow regime |
| url | http://dx.doi.org/10.1155/2021/5296700 |
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