Parametric studies and reliability of near-wall turbulence modeling for Large Eddy Simulation of incompressible flows / Khan Raqib Mahmud, M. M. Rhaman and Abul Kalam Al Azad
We present the parametric studies of near-wall turbulence modeling for Large Eddy Simulation (LES) of incompressible flows. Flow across a step channel is considered for the numerical studies as the complex wall bounded flows can be highly sensitive to the friction enforced and results are analyzed a...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Faculty of Mechanical Engineering Universiti Teknologi MARA (UiTM)
2017
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| Subjects: | |
| Online Access: | https://ir.uitm.edu.my/id/eprint/21119/ |
| _version_ | 1848805167473885184 |
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| author | Mahmud, Khan Raqib M. M., Rhaman Al Azad, Abul Kalam |
| author_facet | Mahmud, Khan Raqib M. M., Rhaman Al Azad, Abul Kalam |
| author_sort | Mahmud, Khan Raqib |
| building | UiTM Institutional Repository |
| collection | Online Access |
| description | We present the parametric studies of near-wall turbulence modeling for Large Eddy Simulation (LES) of incompressible flows. Flow across a step channel is considered for the numerical studies as the complex wall bounded flows can be highly sensitive to the friction enforced and results are analyzed according to the physics of the flow. We apply the wall shear stress model to model the boundary layers in LES which we refer to as near-wall turbulence modeling. This paper is mainly concerned with the investigation of sensitivity of friction parameter of wall shear stress model and the reliability of near-wall turbulence modeling for LES of incompressible flows. The accuracy and efficiency of LES with near-wall turbulence modeling for complex turbulent flows are investigated by the parametric studies of model parameters. It is observed that wall shear stress model computes the reattachment length for flows in a step channel for both constant and parabolic inflow profile efficiently and with high accuracy compared with other results. |
| first_indexed | 2025-11-14T22:06:44Z |
| format | Article |
| id | uitm-21119 |
| institution | Universiti Teknologi MARA |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T22:06:44Z |
| publishDate | 2017 |
| publisher | Faculty of Mechanical Engineering Universiti Teknologi MARA (UiTM) |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | uitm-211192018-10-22T08:40:11Z https://ir.uitm.edu.my/id/eprint/21119/ Parametric studies and reliability of near-wall turbulence modeling for Large Eddy Simulation of incompressible flows / Khan Raqib Mahmud, M. M. Rhaman and Abul Kalam Al Azad jmeche Mahmud, Khan Raqib M. M., Rhaman Al Azad, Abul Kalam TJ Mechanical engineering and machinery Power resources We present the parametric studies of near-wall turbulence modeling for Large Eddy Simulation (LES) of incompressible flows. Flow across a step channel is considered for the numerical studies as the complex wall bounded flows can be highly sensitive to the friction enforced and results are analyzed according to the physics of the flow. We apply the wall shear stress model to model the boundary layers in LES which we refer to as near-wall turbulence modeling. This paper is mainly concerned with the investigation of sensitivity of friction parameter of wall shear stress model and the reliability of near-wall turbulence modeling for LES of incompressible flows. The accuracy and efficiency of LES with near-wall turbulence modeling for complex turbulent flows are investigated by the parametric studies of model parameters. It is observed that wall shear stress model computes the reattachment length for flows in a step channel for both constant and parabolic inflow profile efficiently and with high accuracy compared with other results. Faculty of Mechanical Engineering Universiti Teknologi MARA (UiTM) 2017 Article PeerReviewed text en https://ir.uitm.edu.my/id/eprint/21119/1/AJ_Khan%20Raqib%20Mahmud%20JME%2017.pdf Mahmud, Khan Raqib and M. M., Rhaman and Al Azad, Abul Kalam (2017) Parametric studies and reliability of near-wall turbulence modeling for Large Eddy Simulation of incompressible flows / Khan Raqib Mahmud, M. M. Rhaman and Abul Kalam Al Azad. (2017) Journal of Mechanical Engineering (JMechE) <https://ir.uitm.edu.my/view/publication/Journal_of_Mechanical_Engineering_=28JMechE=29.html>, 14 (2). pp. 125-147. ISSN 1823-5514 ; 2550-164X https://jmeche.uitm.edu.my/ |
| spellingShingle | TJ Mechanical engineering and machinery Power resources Mahmud, Khan Raqib M. M., Rhaman Al Azad, Abul Kalam Parametric studies and reliability of near-wall turbulence modeling for Large Eddy Simulation of incompressible flows / Khan Raqib Mahmud, M. M. Rhaman and Abul Kalam Al Azad |
| title | Parametric studies and reliability of near-wall turbulence modeling for Large Eddy Simulation of incompressible flows / Khan Raqib Mahmud, M. M. Rhaman and Abul Kalam Al Azad |
| title_full | Parametric studies and reliability of near-wall turbulence modeling for Large Eddy Simulation of incompressible flows / Khan Raqib Mahmud, M. M. Rhaman and Abul Kalam Al Azad |
| title_fullStr | Parametric studies and reliability of near-wall turbulence modeling for Large Eddy Simulation of incompressible flows / Khan Raqib Mahmud, M. M. Rhaman and Abul Kalam Al Azad |
| title_full_unstemmed | Parametric studies and reliability of near-wall turbulence modeling for Large Eddy Simulation of incompressible flows / Khan Raqib Mahmud, M. M. Rhaman and Abul Kalam Al Azad |
| title_short | Parametric studies and reliability of near-wall turbulence modeling for Large Eddy Simulation of incompressible flows / Khan Raqib Mahmud, M. M. Rhaman and Abul Kalam Al Azad |
| title_sort | parametric studies and reliability of near-wall turbulence modeling for large eddy simulation of incompressible flows / khan raqib mahmud, m. m. rhaman and abul kalam al azad |
| topic | TJ Mechanical engineering and machinery Power resources |
| url | https://ir.uitm.edu.my/id/eprint/21119/ https://ir.uitm.edu.my/id/eprint/21119/ |