Numerical Investigation by Cut-Cell Approach for Turbulent Flow through an Expanded Wall Channel
The expanded wall channel backward-facing step (BFS) and axisymmetric diffuser plays an important role in the society of fluid dynamics. Using a cut-cell technique is an established new method to treat the inclined wall of an axisymmetric diffuser. Cut-cell handle to reach the shape of the inclined...
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MDPI AG
2023-04-01
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| Series: | Axioms |
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| Online Access: | https://www.mdpi.com/2075-1680/12/5/442 |
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| author | Ramzy M. Abumandour Adel M. El-Reafay Khaled M. Salem Ahmed S. Dawood |
| author_facet | Ramzy M. Abumandour Adel M. El-Reafay Khaled M. Salem Ahmed S. Dawood |
| author_sort | Ramzy M. Abumandour |
| collection | DOAJ |
| description | The expanded wall channel backward-facing step (BFS) and axisymmetric diffuser plays an important role in the society of fluid dynamics. Using a cut-cell technique is an established new method to treat the inclined wall of an axisymmetric diffuser. Cut-cell handle to reach the shape of the inclined wall, an axisymmetric diffuser and complex geometry. It helps treat the boundary condition at the wall in an accurate physical way. The turbulent flow through the geometries is solved by using Reynolds averaged Navier-Stokes equations (RANS) with the standard k-<i>ε</i> model. A self-built FOTRAN code based on the finite volume method with the Semi-Implicit Method for Pressure Linked Equations (SIMPLE) algorithm for pressure velocity coupling is established and examined with published experimental data for two different geometries backward-facing step (BFS) and axisymmetric diffuser. The results of the new technique reflect good agreement between the numerical results and the experimental data. A parametric study of the impact of area ratios (2, 2.5, 3, 3.5) in a backward-facing step on pressure, velocity, and turbulent kinetic energy. The angles (7°, 10°, 14°) and area ratios (2, 2.5, 3, 3.5) effect of an axisymmetric diffuser on the streamlines, local skin friction, pressure, velocity, turbulent kinetic energy, and separation zone. |
| first_indexed | 2024-03-11T03:56:53Z |
| format | Article |
| id | doaj.art-99c4d6a119ee42de89d35b632f6fc1d0 |
| institution | Directory Open Access Journal |
| issn | 2075-1680 |
| language | English |
| last_indexed | 2024-03-11T03:56:53Z |
| publishDate | 2023-04-01 |
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| record_format | Article |
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| spelling | doaj.art-99c4d6a119ee42de89d35b632f6fc1d02023-11-18T00:27:20ZengMDPI AGAxioms2075-16802023-04-0112544210.3390/axioms12050442Numerical Investigation by Cut-Cell Approach for Turbulent Flow through an Expanded Wall ChannelRamzy M. Abumandour0Adel M. El-Reafay1Khaled M. Salem2Ahmed S. Dawood3Basic Engineering Sciences Department, Faculty of Engineering, Menoufia University, Shebin El-Kom 32521, EgyptDepartment of Basic and Applied Science Engineering, Arab Academy for Science, Technology and Maritime Transport, Smart Village Campus, Smart Village 32521, EgyptDepartment of Basic and Applied Science Engineering, Arab Academy for Science, Technology and Maritime Transport, Smart Village Campus, Smart Village 32521, EgyptBasic Engineering Sciences Department, Faculty of Engineering, Menoufia University, Shebin El-Kom 32521, EgyptThe expanded wall channel backward-facing step (BFS) and axisymmetric diffuser plays an important role in the society of fluid dynamics. Using a cut-cell technique is an established new method to treat the inclined wall of an axisymmetric diffuser. Cut-cell handle to reach the shape of the inclined wall, an axisymmetric diffuser and complex geometry. It helps treat the boundary condition at the wall in an accurate physical way. The turbulent flow through the geometries is solved by using Reynolds averaged Navier-Stokes equations (RANS) with the standard k-<i>ε</i> model. A self-built FOTRAN code based on the finite volume method with the Semi-Implicit Method for Pressure Linked Equations (SIMPLE) algorithm for pressure velocity coupling is established and examined with published experimental data for two different geometries backward-facing step (BFS) and axisymmetric diffuser. The results of the new technique reflect good agreement between the numerical results and the experimental data. A parametric study of the impact of area ratios (2, 2.5, 3, 3.5) in a backward-facing step on pressure, velocity, and turbulent kinetic energy. The angles (7°, 10°, 14°) and area ratios (2, 2.5, 3, 3.5) effect of an axisymmetric diffuser on the streamlines, local skin friction, pressure, velocity, turbulent kinetic energy, and separation zone.https://www.mdpi.com/2075-1680/12/5/442axisymmetric diffuserbackward-facing stepturbulent flownumerical methodfinite volumecut cell |
| spellingShingle | Ramzy M. Abumandour Adel M. El-Reafay Khaled M. Salem Ahmed S. Dawood Numerical Investigation by Cut-Cell Approach for Turbulent Flow through an Expanded Wall Channel Axioms axisymmetric diffuser backward-facing step turbulent flow numerical method finite volume cut cell |
| title | Numerical Investigation by Cut-Cell Approach for Turbulent Flow through an Expanded Wall Channel |
| title_full | Numerical Investigation by Cut-Cell Approach for Turbulent Flow through an Expanded Wall Channel |
| title_fullStr | Numerical Investigation by Cut-Cell Approach for Turbulent Flow through an Expanded Wall Channel |
| title_full_unstemmed | Numerical Investigation by Cut-Cell Approach for Turbulent Flow through an Expanded Wall Channel |
| title_short | Numerical Investigation by Cut-Cell Approach for Turbulent Flow through an Expanded Wall Channel |
| title_sort | numerical investigation by cut cell approach for turbulent flow through an expanded wall channel |
| topic | axisymmetric diffuser backward-facing step turbulent flow numerical method finite volume cut cell |
| url | https://www.mdpi.com/2075-1680/12/5/442 |
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