Results 131 to 140 of about 214 (177)

Piano-Key-Weirs as in-channel applications

2023
With reduced footprint and excellent hydraulic performance, piano key weirs (PKW) have been gaining growing attention in the past two decades as a favorable up-to-date solution for the rehabilitation of spillways as well as in-channel applications.
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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
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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
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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
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Piano Key Weir Submergence in Channel Applications

Journal of Hydraulic Engineering, 2012
AbstractWeir submergence can influence head-discharge relationships for weirs used in channel applications when high tailwater conditions exist owing to a downstream control. Weir submergence describes a condition in which the water level downstream of the weir exceeds the weir crest elevation.
M. R. Dabling, B. P. Tullis
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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 ...
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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
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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
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Experimental study on the discharge coefficient of triangular piano key weir*

Irrigation and Drainage, 2022
M H Afshar, Mojtaba Saneie
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