Modelling the Flow Structure in Local Scour Around Bridge Pier
Bridge pier scouring is an important issue of any bridge design work. If it is not taken into account properly, then results will be disastrous. A number of bridges have failed due to clear water local scouring of piers. This research paper presents a numerical model study in which an attempt has be...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Mehran University of Engineering and Technology
2014-04-01
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| Series: | Mehran University Research Journal of Engineering and Technology |
| Subjects: | |
| Online Access: | http://publications.muet.edu.pk/research_papers/pdf/pdf864.pdf |
| _version_ | 1811301052190818304 |
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| author | Usman Ghani Shahid Ali Abdul Ghaffar |
| author_facet | Usman Ghani Shahid Ali Abdul Ghaffar |
| author_sort | Usman Ghani |
| collection | DOAJ |
| description | Bridge pier scouring is an important issue of any bridge design work. If it is not taken into account properly, then results will be disastrous. A number of bridges have failed due to clear water local scouring of piers. This research paper presents a numerical model study in which an attempt has been made to explore the flow variables which exist in and around a scoured bridge pier. A finite volume based model of bridge pier was developed using 3D (Three Dimensional) numerical code FLUENT and GAMBIT. After validation process, different discharge values were considered and its impact on three dimensional characteristics of flow such as stream-wise velocities on longitudinal and transverse sections, turbulance circulation cells, and boundary shear stresses was investigated. It was observed that increasing the discharge results in more turbulance around the pier on its downstream side and turbulence properties are intensified in such a situation. However, the primary velocities on the downstream side remain almost unchanged. The results have been presented in the form of contours, vector of primary velocities and x-y plots of bed shear stresses. This study can be used for enhanced understanding of flow features and improvement of formulae for prediction of scour holes around piers |
| first_indexed | 2024-04-13T07:01:59Z |
| format | Article |
| id | doaj.art-4509ab94e1b8453bbf03d5633fc2f389 |
| institution | Directory Open Access Journal |
| issn | 0254-7821 2413-7219 |
| language | English |
| last_indexed | 2024-04-13T07:01:59Z |
| publishDate | 2014-04-01 |
| publisher | Mehran University of Engineering and Technology |
| record_format | Article |
| series | Mehran University Research Journal of Engineering and Technology |
| spelling | doaj.art-4509ab94e1b8453bbf03d5633fc2f3892022-12-22T02:57:05ZengMehran University of Engineering and TechnologyMehran University Research Journal of Engineering and Technology0254-78212413-72192014-04-01332157168Modelling the Flow Structure in Local Scour Around Bridge PierUsman Ghani0Shahid Ali1Abdul Ghaffar2Department of Civil Engineering, University of Engineering & Technology, Taxila, PakistanPakistan Atomic Energy Commission, Islamabad, PakistanQuaid-e-Azam College of Technology, Sahiwal, PakistanBridge pier scouring is an important issue of any bridge design work. If it is not taken into account properly, then results will be disastrous. A number of bridges have failed due to clear water local scouring of piers. This research paper presents a numerical model study in which an attempt has been made to explore the flow variables which exist in and around a scoured bridge pier. A finite volume based model of bridge pier was developed using 3D (Three Dimensional) numerical code FLUENT and GAMBIT. After validation process, different discharge values were considered and its impact on three dimensional characteristics of flow such as stream-wise velocities on longitudinal and transverse sections, turbulance circulation cells, and boundary shear stresses was investigated. It was observed that increasing the discharge results in more turbulance around the pier on its downstream side and turbulence properties are intensified in such a situation. However, the primary velocities on the downstream side remain almost unchanged. The results have been presented in the form of contours, vector of primary velocities and x-y plots of bed shear stresses. This study can be used for enhanced understanding of flow features and improvement of formulae for prediction of scour holes around piershttp://publications.muet.edu.pk/research_papers/pdf/pdf864.pdfPier ScourOpen ChannelBoundary Shear StressesNavior-Stokes EquationsFLUENT |
| spellingShingle | Usman Ghani Shahid Ali Abdul Ghaffar Modelling the Flow Structure in Local Scour Around Bridge Pier Mehran University Research Journal of Engineering and Technology Pier Scour Open Channel Boundary Shear Stresses Navior-Stokes Equations FLUENT |
| title | Modelling the Flow Structure in Local Scour Around Bridge Pier |
| title_full | Modelling the Flow Structure in Local Scour Around Bridge Pier |
| title_fullStr | Modelling the Flow Structure in Local Scour Around Bridge Pier |
| title_full_unstemmed | Modelling the Flow Structure in Local Scour Around Bridge Pier |
| title_short | Modelling the Flow Structure in Local Scour Around Bridge Pier |
| title_sort | modelling the flow structure in local scour around bridge pier |
| topic | Pier Scour Open Channel Boundary Shear Stresses Navior-Stokes Equations FLUENT |
| url | http://publications.muet.edu.pk/research_papers/pdf/pdf864.pdf |
| work_keys_str_mv | AT usmanghani modellingtheflowstructureinlocalscouraroundbridgepier AT shahidali modellingtheflowstructureinlocalscouraroundbridgepier AT abdulghaffar modellingtheflowstructureinlocalscouraroundbridgepier |