生态学杂志2018，Vol.37Issue(4)：1282-1290,9.DOI:10.13292/j.1000-4890.201804.012
基于多重水力学因子的竖缝式鱼道中鱼类上溯轨迹模拟
The simulation of fish migratory trajectory in a vertical slot fishway based on multi-hydraulic indices
摘要
Abstract
To explore the fish adaptability under various hydraulic factors during the process of fish tracing in a vertical slot fishway,it is necessary to simulate the fish migratory trajectory.In this study,a numerical model was used to calculate the flow field and the field of turbulent kinetic energy and its dissipation rate in a vertical slot fishway.An influence coefficient for each hydraulic factor was endowed by the degree of fish preference on them.With this method,the migratory trajectory of a fish was modeled and adjusted by results from previous laboratory experiment.The results showed that the field structure of turbulent kinetic energy influenced the fish trajectory most profoundly since most the tracing points appeared nearby a threshold value of turbulent kinetic energy.The influence of centripetal velocity was limited but not negligible,because it is a key factor in the process of continuous fish traceability.The influence of the turbulence dissipation rate could be negligible.关键词
竖缝式鱼道/向心流速/湍流动能/湍动耗散率/上溯轨迹Key words
vertical slot fishway/centripetal velocity/turbulent kinetic energy/turbulent dissipation rate/migratory trajectory引用本文复制引用
蒋永强,杨忠勇,石小涛,吴磊,聂隆锋,魏永才..基于多重水力学因子的竖缝式鱼道中鱼类上溯轨迹模拟[J].生态学杂志,2018,37(4):1282-1290,9.基金项目
湖北省高等学校优秀中青年科技创新团队计划鱼类过坝技术项目(T201703)和国家自然科学基金项目(51579136)资助. （T201703）
