Results 131 to 140 of about 217 (176)

Hydraulics of Piano Key Weirs: A review

2017
The Piano Key Weir (PKW) is a rectangular-labyrinth-type weir that utilizes cantilevered apexes in order to maximize the allowable weir length that can fit in a given spillway channel width, while reducing the required structural footprint. These features make it an interesting and viable solution for increasing discharge capacity at existing dams as ...
Erpicum, Sébastien, Archambeau, Pierre, Dewals, Benjamin, Pirotton, Michel   +3 more
openaire   +2 more sources

Could Piano Key Weirs be subject to nappe oscillations?

2017
Nappe oscillation may affect a variety of free overflow hydraulic structures operating at low heads such as crest gates and various types of weirs. This phenomenon produces oscillations in the thin nappe cascading downstream of the control structure.
Lodomez, Maurine, Pirotton, Michel, Dewals, Benjamin, Archambeau, Pierre, Erpicum, Sébastien   +4 more
openaire   +2 more sources

Unsteady Hydrodynamic Behavior at Piano Key Weirs

Journal of Hydraulic Engineering, 2020
AbstractPiano key weirs (PKWs) are nonlinear hydraulic structures that exhibit unsteady hydraulic phenomena.
Frank J. M. Denys, Gerrit R. Basson
openaire   +1 more source

Labyrinth and Piano Key Weirs

2011
Dam engineering is currently experiencing a strong revival of labyrinth oriented weirs. Labyrinth weirs, with a repetitive constructional character and an increased specific discharge capacity, are a very good technical-economical compromise. The concept of Piano Key Weir (PKW), with alveoli developed in overhangs from a reduced support area ...
openaire   +1 more source

On the Piano Key Weir hydraulics

2012
The Piano Key Weir (PKW) is a kind of labyrinth weir with a geometry that uses overhangs to reduce the base length. The PKW can thus be directly placed on the crest of an existing dam. Together with its high discharge capacity for low heads (up to four times as high as an ogee-crested weir of same length), this geometric feature makes the PKW an ...
Machiels, Olivier, Erpicum, Sébastien, Archambeau, Pierre, Dewals, Benjamin, Pirotton, Michel   +4 more
openaire   +1 more source

Evaluation of discharge equations of the piano key weirs

Flow Measurement and Instrumentation, 2019
Abstract In present scenario, Piano key weir has played a vital role in increasing the discharge capacity of the available dams. This modified weir is the replacement of creaky and conventional labyrinth weir and it is best suited for the low head dams. This new labyrinth type weir is utmost solution for the rehabilitation of the spillways all across
Binit Kumar, Subhojit Kadia, Zulfequar Ahmad   +2 more
openaire   +1 more source

Effects of weir geometry on scour development in the downstream of Piano Key Weirs

Water Science and Technology: Water Supply, 2021
Sohr Nazari, Nosratollah Amanian
exaly  

Piano Key Weir spillway

2013
M Phillips, E Lesleighter
openaire   +1 more source

Laboratory Study of the Hydraulic Performance of the A-Type Triangular Piano Key Weir

Water (Switzerland), 2023
Amir Ghaderi, Silvia Di Francesco, Forough Alizadeh Sanami   +2 more
exaly  

Contribution to the study of piano Key Weir hydraulics

2010
Within the framework of updating the release and storage capacities of existing reservoirs, the use of piano key weirs (PKW) can be an interesting alternative either to increase the discharge of a free weir without changing the weir width on the dam crest nor the reservoir level, or to increase the threshold reservoir level before releasing water while
Erpicum, Sébastien, Machiels, Olivier, Dewals, Benjamin, Archambeau, Pierre, Pirotton, Michel   +4 more
openaire   +1 more source