Optimizing the entrance location for a fish pass facility with limited attraction flow in a large river — A case study of the Jinsha River, China
| Autor: | Li Guangning, Haitao Liu, Tiegang Zheng, Shuangke Sun |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Hydrology business.industry 010604 marine biology & hydrobiology Environmental science 010501 environmental sciences business 01 natural sciences Attraction Hydropower 0105 earth and related environmental sciences General Environmental Science Civil and Structural Engineering |
| Zdroj: | Canadian Journal of Civil Engineering. 46:847-857 |
| ISSN: | 1208-6029 0315-1468 |
| Popis: | The fish pass facility of the Suwalong hydropower project (SHP) is one of the fish pass facilities in the Jinsha River with limited attraction flow. The bed elevation was raised and a shunt wall was added to optimize aggregation zones in the tailrace channel of the SHP. The flow field, fish migration corridors, and aggregation zones were analyzed using computational fluid dynamics software Flow-3D. Raising the bed elevation can accelerate the water, and new velocity barriers can be formed. Adding a shunt wall can split the flow. These two methods are effective for creating fish migration corridors and aggregation zones in the tailrace discharge. As the fish pass facility attraction flow cannot compete with the main current of the river, it is reasonable to first attract the fish from the river into the aggregation zone in the tailrace channel through the tailrace discharge and then set the entrance within the zone. These two methods were utilized to enhance the attraction efficiency through optimizing the entrance location. |
| Databáze: | OpenAIRE |
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