Energy dissipation downstream of Piano Key Weirs – Case of study of Gloriettes Dam (France) [PDF]
The Gloriettes concrete arch dam in the French Pyrenees showed a deficit of 80 m3/s for the new design flood of 150 m3/s. To address the problem, a Piano Key Weir (PKW) as an additional spillway was designed.
Bieri, Martin +5 more
core
Experimental investigation of the effect of the presence of obstacles at the end of the output keys of the C-type piano key weir on its downstream scour [PDF]
علوم آب و خاکPiano key weirs are a type of non-linear weir that have a higher discharge coefficient than similar linear weirs. These hydraulic structures have a lightweight foundation and a simple structure is designed and installed on dams and drainage channels. Due
A. Khoshfetrat, Y. Neamah Abdulhasan
doaj
1D numerical approach to model the flow over a piano key weir (PKW)
, 2010 Le déversoir en touche de piano (Piano Key Weir – PKW) est un nouveau type de déversoir qui possède des capacités hydrauliques intéressantes, en particulier pour de faibles hauteurs de charge. Cependant, sa géométrie complexe, avec un grand nombre de paramètres, rend difficile la compréhension de son fonctionnement hydraulique et donc le ...
Erpicum, Sébastien +4 more
openaire +1 more source
Effect of driftwood on hydraulic head of Piano Key weirs [PDF]
Driftwood is often transported by a river course during flood events and can be problematic where it accumulates at hydraulic structures. Near obstacles, driftwood can block and thus reduces the open flow area for water passage, resulting in a lowered ...
Schleiss, Anton +2 more
core
Scale effects related to the rating curve of cylindrically crested Piano Key weirs [PDF]
Hydraulic scale effects on physical Piano Key weir (PKW) models were so far rarely discussed in literature, even though almost all prototypes are model-tested before construction.
Schleiss, Anton +3 more
core
Enhancing the Hydraulic Efficiency of Piano Key Weir (PKW) — Some Research Achievements [PDF]
As an effective flood control structure, the piano key weir (PKW) typically features a rectangular planform for its overhangs. However, this design offers room for improvement. To enhance hydraulic efficiency, two modified PKW layouts are proposed.
Ansell, Anders +4 more
core
A review: Aeration efficiency of hydraulic structures in diffusing DO in water. [PDF]
MethodsX, 2023 Puri D, Sihag P, Thakur MS.
europepmc +1 more source
Piano Key Weir as overflow on sedimentation basin of wastewater treatment plant [PDF]
, 2021 Numerical simulations documented in literature and experiences with driftwood blockage suggested that the flow field upstream of Piano Key Weirs (PKWs) includes an active zone reaching far down near of the weir.
Dorthe, David, Pfister, Michael
core
Piano Key Weir Research: State-of-the-art and Future Challenges [PDF]
, 2018 Piano Key Weirs (PKW) are non-linear weir structures, which were developed in the late 1990’s. In the following years several structures were investigated in experimental as well as numerical models and were also built in prototypes, especially in France.
Oertel, M.
core +1 more source
Experimental Investigation of Local Scour Downstream of a Type B Piano Key Weir on Sand and Gravel Bed Materials [PDF]
علوم آب و خاکPiano key weirs are a new form of labyrinth weirs and exhibit nonlinear characteristics. Due to their high efficiency regarding flow capacity, it is crucial to investigate local scour and identify solutions to mitigate it.
L. Babakhah, A. Khoshfetrat, E. Delavari
doaj