Study of a Rock-Ramp Fish Pass with Staggered Emergent Square Obstacles
A rock-ramp fish passage with square obstacles was experimentally and numerically studied in this work with the objective of investigating in detail the hydraulic behind such fishways and to evaluate the importance of the shape of the obstacles. The LES and VOF methods were used for the simulations,...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-04-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/13/9/1175 |
| _version_ | 1797536479767953408 |
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| author | Flavia Cavalcanti Miranda Ludovic Cassan Pascale Laurens Tien Dung Tran |
| author_facet | Flavia Cavalcanti Miranda Ludovic Cassan Pascale Laurens Tien Dung Tran |
| author_sort | Flavia Cavalcanti Miranda |
| collection | DOAJ |
| description | A rock-ramp fish passage with square obstacles was experimentally and numerically studied in this work with the objective of investigating in detail the hydraulic behind such fishways and to evaluate the importance of the shape of the obstacles. The LES and VOF methods were used for the simulations, and for the measurements, shadowgraphy and ADV were applied. Two different validations were successfully performed. In the first one, the experimental and numerical results of a chosen case were compared in detail. In the second validation, the focus was given to the stage-discharge. Following the validation, a numerical study was carried out to point out the differences in the flow characteristics from a configuration with square and circular obstacles. The discharge was nearly the same for both configurations, which implies different water depths. The results showed a lower velocity field, lower turbulent kinetic energy, and lower lateral fluctuations for the configuration with square blocks, which indicated a better passability for this geometry. However, it also presented a higher water depth, which led to a less attractive discharge. The differences in the flow generated in the two configurations indicated that the shape is an important modifiable parameter to be considered in the design process. |
| first_indexed | 2024-03-10T12:01:16Z |
| format | Article |
| id | doaj.art-cead724a1f244fcebec3fe53c84f6182 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T12:01:16Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-cead724a1f244fcebec3fe53c84f61822023-11-21T16:58:14ZengMDPI AGWater2073-44412021-04-01139117510.3390/w13091175Study of a Rock-Ramp Fish Pass with Staggered Emergent Square ObstaclesFlavia Cavalcanti Miranda0Ludovic Cassan1Pascale Laurens2Tien Dung Tran3Fluid Mechanics Department Laboratory, Institut de Mécanique des Fluides, Allée du Professeur Camille Soula, 31400 Toulouse, FranceFluid Mechanics Department Laboratory, Institut de Mécanique des Fluides, Allée du Professeur Camille Soula, 31400 Toulouse, FranceFluid Mechanics Department Laboratory, Institut de Mécanique des Fluides, Allée du Professeur Camille Soula, 31400 Toulouse, FranceFaculty of Water Resources Engineering, Hanoi Campus (Headquarters), Thuyloi University, No. 175 Tay Son, Dong Da, Hanoi 116705, VietnamA rock-ramp fish passage with square obstacles was experimentally and numerically studied in this work with the objective of investigating in detail the hydraulic behind such fishways and to evaluate the importance of the shape of the obstacles. The LES and VOF methods were used for the simulations, and for the measurements, shadowgraphy and ADV were applied. Two different validations were successfully performed. In the first one, the experimental and numerical results of a chosen case were compared in detail. In the second validation, the focus was given to the stage-discharge. Following the validation, a numerical study was carried out to point out the differences in the flow characteristics from a configuration with square and circular obstacles. The discharge was nearly the same for both configurations, which implies different water depths. The results showed a lower velocity field, lower turbulent kinetic energy, and lower lateral fluctuations for the configuration with square blocks, which indicated a better passability for this geometry. However, it also presented a higher water depth, which led to a less attractive discharge. The differences in the flow generated in the two configurations indicated that the shape is an important modifiable parameter to be considered in the design process.https://www.mdpi.com/2073-4441/13/9/1175rock-ramp fish passagelarge eddy simulationstaggered emergent square obstaclesstage-discharge analysisexperimental validation |
| spellingShingle | Flavia Cavalcanti Miranda Ludovic Cassan Pascale Laurens Tien Dung Tran Study of a Rock-Ramp Fish Pass with Staggered Emergent Square Obstacles Water rock-ramp fish passage large eddy simulation staggered emergent square obstacles stage-discharge analysis experimental validation |
| title | Study of a Rock-Ramp Fish Pass with Staggered Emergent Square Obstacles |
| title_full | Study of a Rock-Ramp Fish Pass with Staggered Emergent Square Obstacles |
| title_fullStr | Study of a Rock-Ramp Fish Pass with Staggered Emergent Square Obstacles |
| title_full_unstemmed | Study of a Rock-Ramp Fish Pass with Staggered Emergent Square Obstacles |
| title_short | Study of a Rock-Ramp Fish Pass with Staggered Emergent Square Obstacles |
| title_sort | study of a rock ramp fish pass with staggered emergent square obstacles |
| topic | rock-ramp fish passage large eddy simulation staggered emergent square obstacles stage-discharge analysis experimental validation |
| url | https://www.mdpi.com/2073-4441/13/9/1175 |
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