Numerical Study of the Rough Bed Impact on Energy Dissipation and Cavitation on Chute Spillways
Using a rough bed for spillway compare to common dissipation methods such as stilling basins, stepped spillways, ski jumps, and bed elements may be more efficient to boost energy dissipation. In this research, the impact of spillway continuous bed roughness on energy dissipation was investigated. Fo...
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| Format: | Article |
| Language: | fas |
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Isfahan University of Technology
2022-12-01
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| Series: | علوم آب و خاک |
| Subjects: | |
| Online Access: | http://jstnar.iut.ac.ir/article-1-4211-en.html |
| _version_ | 1798004770643902464 |
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| author | H. Noury Hasanabady M.R. Kavianpour A. Khosrojerdi H. Babazadeh |
| author_facet | H. Noury Hasanabady M.R. Kavianpour A. Khosrojerdi H. Babazadeh |
| author_sort | H. Noury Hasanabady |
| collection | DOAJ |
| description | Using a rough bed for spillway compare to common dissipation methods such as stilling basins, stepped spillways, ski jumps, and bed elements may be more efficient to boost energy dissipation. In this research, the impact of spillway continuous bed roughness on energy dissipation was investigated. For this purpose, a non-dimensional relationship was developed, and by calibrating the numerical model based on the present experimental study, energy dissipation over the spillway for three slopes of 15, 22.5, and 30 (degree) with six roughness sizes of 0.0, 0.005, 0.0072, 0.0111, 0.016, and 0.022 (m) and three discharges of 170, 110, and 90 (lit/s) was investigated. Based on the present results, using a rough bed spillway will increase energy dissipation. Also, the ratio of energy lost per meter length of rough bed spillway to that of smooth spillway increases by chute slope. The results showed that the highest amount of relative energy consumption in the presence of roughness was related to the slope of 22.5 degrees and 22.2 mm for roughness (85%), and the lowest relative energy consumption was observed in the control state (25%). As a result of the present study, a natural rough bed without concrete coating has befitted in terms of environmental aspects, construction cost, and energy loss. |
| first_indexed | 2024-04-11T12:28:40Z |
| format | Article |
| id | doaj.art-0d0212c9e59847048b0494afe58d97c7 |
| institution | Directory Open Access Journal |
| issn | 2476-3594 2476-5554 |
| language | fas |
| last_indexed | 2024-04-11T12:28:40Z |
| publishDate | 2022-12-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | علوم آب و خاک |
| spelling | doaj.art-0d0212c9e59847048b0494afe58d97c72022-12-22T04:23:50ZfasIsfahan University of Technologyعلوم آب و خاک2476-35942476-55542022-12-01263177191Numerical Study of the Rough Bed Impact on Energy Dissipation and Cavitation on Chute SpillwaysH. Noury Hasanabady0M.R. Kavianpour1A. Khosrojerdi2H. Babazadeh3 Science and research Branch, Islamic Azad University of Tehran Khaje Nasir Toosi University of Technology Science and research Branch, Islamic Azad University of Tehran Science and research Branch, Islamic Azad University of Tehran Using a rough bed for spillway compare to common dissipation methods such as stilling basins, stepped spillways, ski jumps, and bed elements may be more efficient to boost energy dissipation. In this research, the impact of spillway continuous bed roughness on energy dissipation was investigated. For this purpose, a non-dimensional relationship was developed, and by calibrating the numerical model based on the present experimental study, energy dissipation over the spillway for three slopes of 15, 22.5, and 30 (degree) with six roughness sizes of 0.0, 0.005, 0.0072, 0.0111, 0.016, and 0.022 (m) and three discharges of 170, 110, and 90 (lit/s) was investigated. Based on the present results, using a rough bed spillway will increase energy dissipation. Also, the ratio of energy lost per meter length of rough bed spillway to that of smooth spillway increases by chute slope. The results showed that the highest amount of relative energy consumption in the presence of roughness was related to the slope of 22.5 degrees and 22.2 mm for roughness (85%), and the lowest relative energy consumption was observed in the control state (25%). As a result of the present study, a natural rough bed without concrete coating has befitted in terms of environmental aspects, construction cost, and energy loss.http://jstnar.iut.ac.ir/article-1-4211-en.htmlchute spillwaynumerical modelenergy dissipationrough bed |
| spellingShingle | H. Noury Hasanabady M.R. Kavianpour A. Khosrojerdi H. Babazadeh Numerical Study of the Rough Bed Impact on Energy Dissipation and Cavitation on Chute Spillways علوم آب و خاک chute spillway numerical model energy dissipation rough bed |
| title | Numerical Study of the Rough Bed Impact on Energy Dissipation and Cavitation on Chute Spillways |
| title_full | Numerical Study of the Rough Bed Impact on Energy Dissipation and Cavitation on Chute Spillways |
| title_fullStr | Numerical Study of the Rough Bed Impact on Energy Dissipation and Cavitation on Chute Spillways |
| title_full_unstemmed | Numerical Study of the Rough Bed Impact on Energy Dissipation and Cavitation on Chute Spillways |
| title_short | Numerical Study of the Rough Bed Impact on Energy Dissipation and Cavitation on Chute Spillways |
| title_sort | numerical study of the rough bed impact on energy dissipation and cavitation on chute spillways |
| topic | chute spillway numerical model energy dissipation rough bed |
| url | http://jstnar.iut.ac.ir/article-1-4211-en.html |
| work_keys_str_mv | AT hnouryhasanabady numericalstudyoftheroughbedimpactonenergydissipationandcavitationonchutespillways AT mrkavianpour numericalstudyoftheroughbedimpactonenergydissipationandcavitationonchutespillways AT akhosrojerdi numericalstudyoftheroughbedimpactonenergydissipationandcavitationonchutespillways AT hbabazadeh numericalstudyoftheroughbedimpactonenergydissipationandcavitationonchutespillways |