Hydromechanical Analysis of Desilting Mechanism of Ecological Arc-Shaped Baffle Fishway

Abstract:

In this paper, we developed a new type of ecological Denil fishway installed with arc-shaped baffles which can split upstream flow to improve the flow condition for fish migration. In fact, the arc-shaped is based on architectonics theory and imitate the mechanism of architectonics.So it has good effectiveness. During the construction course, building materials can be used to improve efficiency.By setting water flow orifices near the V-shaped notch, the energy dissipation can be increased as result of the interaction between the water from the orifices and the water from the notch. The sand or other sediments accumulated on the fishway floor can be washed away by the flow through desilting orifices, meeting the requirement of purificating the fishway and providing a clear environment for fish species. Model tests were conducted to investigate the desilting capability of the ecological arc-shaped baffle fishway and the results agree well with the hydromechanical analysis.

• Periodical: Advanced Materials Research (Volume 511)
• Pages: 154-158
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.511.154
• Online since: April 2012
• Authors: Jing Cong, Di Cui, Fei Yu, Jia Yuan Wang, Li Quan Xie
• Keywords: Arc-Shaped Baffle, Desilting, Ecological Fishway, Hydromechanics, Upstream Migration

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