Flow pattern formed over steps at a low-head dam: Salmon River Dam
ABSTRACTBuilding Stepping way over the low-head dams has been proposed to reduce the risk of drowning in submerged flow conditions. In the Salmon Barrier, adding two steps downstream of weir was previously suggested as an effective method for reducing the risk of drowning downstream of this dam. Giv...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2023-12-01
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| Series: | Water Science |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/23570008.2023.2254972 |
| _version_ | 1797387134563254272 |
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| author | Gholamhossein Beygipoor Roozbeh Aghamajidi |
| author_facet | Gholamhossein Beygipoor Roozbeh Aghamajidi |
| author_sort | Gholamhossein Beygipoor |
| collection | DOAJ |
| description | ABSTRACTBuilding Stepping way over the low-head dams has been proposed to reduce the risk of drowning in submerged flow conditions. In the Salmon Barrier, adding two steps downstream of weir was previously suggested as an effective method for reducing the risk of drowning downstream of this dam. Given the effect of steps on the flow pattern downstream of the weir, the occurrence of dangerous submerged flows at different tailwaters was predicted, and the flow pattern expected at variable tailwaters was studied in comparison with the flow pattern passing over the sharp crested weir. According to the results, the submerged flow pattern downstream of the dam is a combination of the submerged flow pattern over the abrupt drop at low tailwaters and that over the sharp crested weir at high water levels. Consequently, similar correlations for predicting the flow regime downstream of these structures can be presented to predict the flow pattern at different tailwaters. The flow pattern over the step was compared with that over the abrupt drop, and a few diagrams were presented for predicting the occurrence of different flow patterns based on the submergence ratio of steps. Given the similarity of the flow pattern with those in the literature for sharp crested weirs, the flow pattern was also investigated at higher tailwaters. The comparison of correlations developed in this study indicated that the flow pattern approaches that reported in the literature for sharp crested weirs with increasing discharge. |
| first_indexed | 2024-03-08T22:19:31Z |
| format | Article |
| id | doaj.art-a21f2a598239481d9771095c3c1ad2e4 |
| institution | Directory Open Access Journal |
| issn | 2357-0008 |
| language | English |
| last_indexed | 2024-03-08T22:19:31Z |
| publishDate | 2023-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Water Science |
| spelling | doaj.art-a21f2a598239481d9771095c3c1ad2e42023-12-18T14:48:18ZengTaylor & Francis GroupWater Science2357-00082023-12-0137132934310.1080/23570008.2023.2254972Flow pattern formed over steps at a low-head dam: Salmon River DamGholamhossein Beygipoor0Roozbeh Aghamajidi1Department of Civil Engineering, Islamic Azad University, Bandarabbass, IranIslamic Azad University, Sepidan, IranABSTRACTBuilding Stepping way over the low-head dams has been proposed to reduce the risk of drowning in submerged flow conditions. In the Salmon Barrier, adding two steps downstream of weir was previously suggested as an effective method for reducing the risk of drowning downstream of this dam. Given the effect of steps on the flow pattern downstream of the weir, the occurrence of dangerous submerged flows at different tailwaters was predicted, and the flow pattern expected at variable tailwaters was studied in comparison with the flow pattern passing over the sharp crested weir. According to the results, the submerged flow pattern downstream of the dam is a combination of the submerged flow pattern over the abrupt drop at low tailwaters and that over the sharp crested weir at high water levels. Consequently, similar correlations for predicting the flow regime downstream of these structures can be presented to predict the flow pattern at different tailwaters. The flow pattern over the step was compared with that over the abrupt drop, and a few diagrams were presented for predicting the occurrence of different flow patterns based on the submergence ratio of steps. Given the similarity of the flow pattern with those in the literature for sharp crested weirs, the flow pattern was also investigated at higher tailwaters. The comparison of correlations developed in this study indicated that the flow pattern approaches that reported in the literature for sharp crested weirs with increasing discharge.https://www.tandfonline.com/doi/10.1080/23570008.2023.2254972Low-head damstepped damSalmon River damsubmerged jumpflow pattern |
| spellingShingle | Gholamhossein Beygipoor Roozbeh Aghamajidi Flow pattern formed over steps at a low-head dam: Salmon River Dam Water Science Low-head dam stepped dam Salmon River dam submerged jump flow pattern |
| title | Flow pattern formed over steps at a low-head dam: Salmon River Dam |
| title_full | Flow pattern formed over steps at a low-head dam: Salmon River Dam |
| title_fullStr | Flow pattern formed over steps at a low-head dam: Salmon River Dam |
| title_full_unstemmed | Flow pattern formed over steps at a low-head dam: Salmon River Dam |
| title_short | Flow pattern formed over steps at a low-head dam: Salmon River Dam |
| title_sort | flow pattern formed over steps at a low head dam salmon river dam |
| topic | Low-head dam stepped dam Salmon River dam submerged jump flow pattern |
| url | https://www.tandfonline.com/doi/10.1080/23570008.2023.2254972 |
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