Results 51 to 60 of about 214 (177)
Laboratory studies into hydraulic coefficient in curved planform labyrinth weir and piano key weir
Građevinar, 2019 In this paper, the discharge coefficient of piano key weirs is compared with that of curved planform labyrinth weirs. Results show that the discharge coefficient of piano key weirs is by 17.1% higher compared to that of curved planform labyrinth weirs ...
Behzad Zeraat +4 more
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UEG Week 2025 Poster Presentations [PDF]
United European Gastroenterol JUnited European Gastroenterology Journal, Volume 13, Issue S8, Page S803-S1476, October 2025.
europepmc +2 more sources
Numerical Simulation of Flow Over the Arced Trapezoidal Piano Key Weir [PDF]
Journal of Hydraulic and Water EngineeringWeir is one of the most common man-made hydraulic structures that are used to measure the flow in canals, store water, and control floods. The piano key weir (PKW) is a type of non-linear weir and is considered one of the best hydraulic-economical ...
Adel Edalati, Ramin Amini
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Hydraulic design of A-type Piano Key Weirs
Journal of Hydraulic Research, 2012 Piano Key Weirs (PKWs) are an alternative to linear overflow structures, increasing the unit discharge for similar heads and spillway widths. Thus, they allow to operate reservoirs with elevated supply levels, thereby providing additional storage volume. As they are relatively novel structures, few design criteria are available.
Ribeiro, Marcelo Leite +3 more
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Numerical Analysis of Flow Hydraulic in Trapezoidal Labyrinths and Piano Key Weirs
علوم آب و خاک, 2020 The flow fields over a trapezoidal labyrinth weir (two-cycle) and a piano key weir were simulated using Flow3D, studying the impact of each model on the flow field in the weirs and the coefficient of discharge in comparison with the available ...
R. Gharibvand +4 more
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Conducting experimental and numerical studies to analyze the impact of the base nose shape on flow hydraulics in PKW weir using FLOW 3D [PDF]
Journal of Hydraulic StructuresWeirs serve as fundamental structures for channeling excess flow from behind dams to downstream areas. In this study, a numerical and laboratory investigation was conducted to explore the impact of different base nose shapes installed under the outlet ...
Behshad Mardasi +2 more
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Hydraulic Advantage of Piano-key Weir Over Ogee Weir
International Journal of Innovative Technology and Exploring Engineering, 2019 The piano-key weir is a new encouraging hydraulic structure yet to become a widespread usage due to limited knowledge of the hydraulic performance. A laboratory investigation on the hydraulic efficiency of the piano-key weir was compared with that of an ogee weir.
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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
Efficiency Improvement of Piano Key Weirs Using Numerical Simulation [PDF]
Journal of Hydraulic StructuresPiano key weirs, as a type of non-linear spillway with specific geometry, have a higher discharge capacity and have thus attracted researchers' attention. The use of piano key weirs is proposed as an alternative solution to improve dam performance.
Behnam Taheri +2 more
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Journal of Engineering and Sustainable DevelopmentWeirs are hydraulic constructions typically employed in dam spillways and channel control structures. The shape and size of the crest will determine whether the weir is linear or non-linear.
Taghreed A. Musa, Najm O.S. Alghazali
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