Suitability of 3D Hydrodynamic Models for Hydraulic Optimization of Turning Pools in Pool-type Fishways

摘要

At many locations turning pools have to be integrated into fish passes, for example due to restricted space available. To date the knowledge of the hydraulics and ecological performance of these special basins is limited. The flow patterns and vortices in the pools of fish passes can be simulated with 3D hydrodynamic models already during the design phase. The advantages and limitations of 3D hydrodynamic models were demonstrated in the context of a study of three turning pools of a planned fishway. In addition, a new turning pool shape was developed that best met the established passage criteria.