Velocity profiles and turbulence intensities around side-by-side bridge piers under ice-covered flow condition
Recent studies have shown that the presence of ice cover leads to an intensified local scour pattern in the vicinity of bridge piers. To investigate the local scour pattern in the vicinity of bridge pier under ice-covered flow condition comparing to that under open channel flow condition, it is esse...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Sciendo
2020-03-01
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| Series: | Journal of Hydrology and Hydromechanics |
| Subjects: | |
| Online Access: | https://doi.org/10.2478/johh-2019-0029 |
| _version_ | 1818394961364647936 |
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| author | Namaee Mohammad Reza Sui Jueyi |
| author_facet | Namaee Mohammad Reza Sui Jueyi |
| author_sort | Namaee Mohammad Reza |
| collection | DOAJ |
| description | Recent studies have shown that the presence of ice cover leads to an intensified local scour pattern in the vicinity of bridge piers. To investigate the local scour pattern in the vicinity of bridge pier under ice-covered flow condition comparing to that under open channel flow condition, it is essential to examine flow field around bridge piers under different flow conditions. In order to do so, after creation of smooth and rough ice covers, three-dimensional timeaveraged velocity components around four pairs of bridge piers were measured using an Acoustic Doppler velocimetry (ADV). The ADV measured velocity profiles describe the difference between the velocity distributions in the vicinity of bridge piers under different covered conditions. Experimental results show that the vertical velocity distribution which represents the strength of downfall velocity is the greatest under rough covered condition which leads to a greater scour depth. Besides, results show that the turbulent intensity increases with pier size regardless of flow cover, which implies that larger scour depth occurs around piers with larger diameter. |
| first_indexed | 2024-12-14T06:09:31Z |
| format | Article |
| id | doaj.art-e4d063680b6f4eeba9406fb388c7155b |
| institution | Directory Open Access Journal |
| issn | 1338-4333 |
| language | English |
| last_indexed | 2024-12-14T06:09:31Z |
| publishDate | 2020-03-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Journal of Hydrology and Hydromechanics |
| spelling | doaj.art-e4d063680b6f4eeba9406fb388c7155b2022-12-21T23:14:12ZengSciendoJournal of Hydrology and Hydromechanics1338-43332020-03-01681708210.2478/johh-2019-0029Velocity profiles and turbulence intensities around side-by-side bridge piers under ice-covered flow conditionNamaee Mohammad Reza0Sui Jueyi1Environmental Engineering Program, University of Northern British Columbia, 3333 University Way, Prince George, BC, Canada.Environmental Engineering Program, University of Northern British Columbia, 3333 University Way, Prince George, BC, Canada.Recent studies have shown that the presence of ice cover leads to an intensified local scour pattern in the vicinity of bridge piers. To investigate the local scour pattern in the vicinity of bridge pier under ice-covered flow condition comparing to that under open channel flow condition, it is essential to examine flow field around bridge piers under different flow conditions. In order to do so, after creation of smooth and rough ice covers, three-dimensional timeaveraged velocity components around four pairs of bridge piers were measured using an Acoustic Doppler velocimetry (ADV). The ADV measured velocity profiles describe the difference between the velocity distributions in the vicinity of bridge piers under different covered conditions. Experimental results show that the vertical velocity distribution which represents the strength of downfall velocity is the greatest under rough covered condition which leads to a greater scour depth. Besides, results show that the turbulent intensity increases with pier size regardless of flow cover, which implies that larger scour depth occurs around piers with larger diameter.https://doi.org/10.2478/johh-2019-0029bridge pierice coverlocal scouracoustic doppler velocimetry (adv)horseshoe vortex |
| spellingShingle | Namaee Mohammad Reza Sui Jueyi Velocity profiles and turbulence intensities around side-by-side bridge piers under ice-covered flow condition Journal of Hydrology and Hydromechanics bridge pier ice cover local scour acoustic doppler velocimetry (adv) horseshoe vortex |
| title | Velocity profiles and turbulence intensities around side-by-side bridge piers under ice-covered flow condition |
| title_full | Velocity profiles and turbulence intensities around side-by-side bridge piers under ice-covered flow condition |
| title_fullStr | Velocity profiles and turbulence intensities around side-by-side bridge piers under ice-covered flow condition |
| title_full_unstemmed | Velocity profiles and turbulence intensities around side-by-side bridge piers under ice-covered flow condition |
| title_short | Velocity profiles and turbulence intensities around side-by-side bridge piers under ice-covered flow condition |
| title_sort | velocity profiles and turbulence intensities around side by side bridge piers under ice covered flow condition |
| topic | bridge pier ice cover local scour acoustic doppler velocimetry (adv) horseshoe vortex |
| url | https://doi.org/10.2478/johh-2019-0029 |
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