Unsteady pressure fluctuation for internal flow in a cylinder using LES model
Fully developed turbulent flow analysis in cylindrical pipe needs highly accurate turbulence model in the smallest scale. This kind of model will enable us to explore the behaviour of wall pressure fluctuation. This study aims to investigate the pressure fluctuation on a pipe wall using Large Eddy S...
| Main Authors: | , , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
AIP Publishing LLC.
2011
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| Subjects: | |
| Online Access: | http://umpir.ump.edu.my/id/eprint/26982/ http://umpir.ump.edu.my/id/eprint/26982/1/Unsteady%20pressure%20fluctuation%20for%20internal%20flow%20in%20a%20cylinder%20using%20LES%20model.pdf |
| _version_ | 1848822673827692544 |
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| author | Syarifah, Syahirah Kahar, Osman Kamarul, Redzuan Zamani, Ngali Nasrul Hadi, Johari |
| author_facet | Syarifah, Syahirah Kahar, Osman Kamarul, Redzuan Zamani, Ngali Nasrul Hadi, Johari |
| author_sort | Syarifah, Syahirah |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | Fully developed turbulent flow analysis in cylindrical pipe needs highly accurate turbulence model in the smallest scale. This kind of model will enable us to explore the behaviour of wall pressure fluctuation. This study aims to investigate the pressure fluctuation on a pipe wall using Large Eddy Simulation (LES) model in the fully developed flow region. Case studies with several flow rates and pipe diameters were modelled to determine the relationship under unsteady flow conditions. All flows were assumed to be incompressible in rigid pipe wall. Periodic boundary conditions were imposed for the outlet. All models were solved using FLUENT software. The results clearly show non-uniform pressure distribution on the pipe wall for all cases studied. The results also show nonlinear correlation between flow rates and pressure fluctuations along and around the pipe wall. Overall, the results indicate that smaller pipe diameter can only accommodate small range of flow rates before it reached relatively high maximum pressure. |
| first_indexed | 2025-11-15T02:44:59Z |
| format | Conference or Workshop Item |
| id | ump-26982 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T02:44:59Z |
| publishDate | 2011 |
| publisher | AIP Publishing LLC. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-269822020-03-22T22:58:18Z http://umpir.ump.edu.my/id/eprint/26982/ Unsteady pressure fluctuation for internal flow in a cylinder using LES model Syarifah, Syahirah Kahar, Osman Kamarul, Redzuan Zamani, Ngali Nasrul Hadi, Johari TJ Mechanical engineering and machinery Fully developed turbulent flow analysis in cylindrical pipe needs highly accurate turbulence model in the smallest scale. This kind of model will enable us to explore the behaviour of wall pressure fluctuation. This study aims to investigate the pressure fluctuation on a pipe wall using Large Eddy Simulation (LES) model in the fully developed flow region. Case studies with several flow rates and pipe diameters were modelled to determine the relationship under unsteady flow conditions. All flows were assumed to be incompressible in rigid pipe wall. Periodic boundary conditions were imposed for the outlet. All models were solved using FLUENT software. The results clearly show non-uniform pressure distribution on the pipe wall for all cases studied. The results also show nonlinear correlation between flow rates and pressure fluctuations along and around the pipe wall. Overall, the results indicate that smaller pipe diameter can only accommodate small range of flow rates before it reached relatively high maximum pressure. AIP Publishing LLC. 2011 Conference or Workshop Item PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/26982/1/Unsteady%20pressure%20fluctuation%20for%20internal%20flow%20in%20a%20cylinder%20using%20LES%20model.pdf Syarifah, Syahirah and Kahar, Osman and Kamarul, Redzuan and Zamani, Ngali and Nasrul Hadi, Johari (2011) Unsteady pressure fluctuation for internal flow in a cylinder using LES model. In: AIP Conference Proceedings: 4th International Meeting of Advances in Thermofluids (IMAT 2011) , 3-4 October 2011 , Melaka. pp. 782-788., 1440 (782). ISSN 0094-243X (Published) https://doi.org/10.1063/1.4704288 |
| spellingShingle | TJ Mechanical engineering and machinery Syarifah, Syahirah Kahar, Osman Kamarul, Redzuan Zamani, Ngali Nasrul Hadi, Johari Unsteady pressure fluctuation for internal flow in a cylinder using LES model |
| title | Unsteady pressure fluctuation for internal flow in a cylinder using LES model |
| title_full | Unsteady pressure fluctuation for internal flow in a cylinder using LES model |
| title_fullStr | Unsteady pressure fluctuation for internal flow in a cylinder using LES model |
| title_full_unstemmed | Unsteady pressure fluctuation for internal flow in a cylinder using LES model |
| title_short | Unsteady pressure fluctuation for internal flow in a cylinder using LES model |
| title_sort | unsteady pressure fluctuation for internal flow in a cylinder using les model |
| topic | TJ Mechanical engineering and machinery |
| url | http://umpir.ump.edu.my/id/eprint/26982/ http://umpir.ump.edu.my/id/eprint/26982/ http://umpir.ump.edu.my/id/eprint/26982/1/Unsteady%20pressure%20fluctuation%20for%20internal%20flow%20in%20a%20cylinder%20using%20LES%20model.pdf |