In parallel to their most frequent application as an auxiliary dam spillway, piano key weirs
(PKWs) are also installed on low-head barrages in combination with run-off-the-river power …

Labyrinth weirs are mainly used to increase the discharge capacity. The current study adds
a new performance to labyrinth weirs as an energy dissipator. The labyrinth weirs' zigzag …

In recent decades, the advancement of knowledge on the hydraulics of labyrinth weirs has
resulted mainly from physical modeling. In this study, numerical simulations of free-flow and …

A Piano Key weir (PK weir) is a nonlinear, labyrinth-type weir well suited for rehabilitation
projects due to a relatively small footprint and the ability to pass large discharges for lesser …

The current literature for labyrinth weirs suggests that little attention has been paid to the
complex free-surface flows generated downstream of these structures. In particular, there is …

Beyond their initial application on gravity dam crests as an element of an auxiliary spillway,
Piano Key Weirs (PKWs) are more and more combined with weirs on rivers. Such …

In order to evaluate the flow characteristics downstream of a rectangular labyrinth weir
including energy dissipation an experimental study was carried out. The objective was to …

A systematic experimental study has been carried out to compare the residual energy at the
toe of a stepped spillway of varied length considering a classical ogee-crested weir (OCW) …

Flow characteristics and energy dissipation of Piano Key Weirs (PKWs) were investigated in
this study and compared with rectangular labyrinth weirs (RLWs). Despite their increasing …

In recent years, the rehabilitation of spillways and design of new dam constructions have
considered the combination of a stepped chute with a labyrinth weir crest, highlighting the …