期刊
ENVIRONMENTAL FLUID MECHANICS
卷 11, 期 1, 页码 1-21出版社
SPRINGER
DOI: 10.1007/s10652-010-9198-4
关键词
Turbulent flow; Vertical slot fishways; PIV; Measurements; POD
资金
- Office National de l'Eau et des Milieux Aquatiques (ONEMA)
- Voies Navigables de France (VNF)
The kinematics of hydrodynamic turbulent flows developed in vertical slot fishways (VSF) was studied in detail in flow patterns not yet published to date for the purposes of modifying existing devices and to allow for the passage of all fishes, particularly the smaller species. A transparent device based on the typical prototype dimensions of VSF in France was constructed for the experiment. The velocity measurements were carried out by Particle Image Velocimetry (PIV). These measurements were used to determine the various kinematics parameters characterizing the flow. From the dimensions and slope of the fishway, two flow topologies highlighting the swirling pattern were proposed. The method of Proper Orthogonal Decomposition (POD) was used to undertake unsteady and energetic analyses to characterize the main phases of flow evolution that fish passing through the passage may encounter.
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