Author(s): Shicheng Li; James Yang

Linked Author(s): James Yang

Keywords: Piano key weir; Discharge capacity; Physical modeling; CFD

Abstract: Many hydropower dams in Sweden have insufficient discharge capacity. As an effective flood discharge structure, the piano key weir has gradually become an alternative in the refurbishment of the existing dams. Along with investigating its structural performance in cold climates, laboratory and CFD studies are conducted to examine its discharge capacity and hydraulic behaviors and compare the two approaches. This study confirms CFD’s accuracy in predicting PK weirs’ hydraulic behaviors, with a maximum relative error of 11.6% observed at higher heads. It also highlights PK weirs’ comparative effectiveness and provides insights into optimizing their design for improved flood management in existing and new hydraulic facilities.

DOI: https://doi.org/10.3850/iahr-hic2483430201-95

Year: 2024