Results 1 to 10 of about 135 (128)
Energy Dissipation of Type a Piano Key Weirs [PDF]
Water (Switzerland), 2020 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 upstream-head values when compared with other weir types. A critical component of a hydraulic structure is the energy-dissipative properties.
Brian Crookston, Crookston Brian M
exaly +4 more sources
Comparison of Discharge Coefficient Between Arced Piano Key Weir and Non-Arc Piano Key Weirs [PDF]
مهندسی منابع آب, 2020 In this paper, discharge coefficient of arced piano key weir compared against two models of normal or fashionable piano key weirs with no arc in their plan. The arced piano key weirs are less investigated. Piano key weirs are pretty new sort of labyrinth
aliakbar karamvand +2 more
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Piano key weir with sloped parapet wall [PDF]
علوم و مهندسی آبیاری, 2015 Since the one of the application of piano keys weir is use in irrigation and drainage network, and it is possible that with decrease of discharge, the water level during dehydration is faced with a drastic reduction.
Ali Reza Afzalian, Javad Ahadiyan
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Method for the preliminary design of Piano Key Weirs [PDF]
Houille Blanche, 2012 The Piano Key Weir (PKW) is a particular geometry of weir associating to a labyrinth shape the use of overhangs to reduce the basis length. The PKW could thus be directly placed on a dam crest. Together with its important discharge capacity for low heads, this geometric feature makes the PKW an interesting solution for dam rehabilitation.
Pierre Archambeau +2 more
exaly +2 more sources
Hydraulic design of A-type Piano Key Weirs
Journal of Hydraulic Research/De Recherches Hydrauliques, 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.
Anton J Schleiss +2 more
exaly +3 more sources
Clear Water Scour around at a Piano Key Side Weir of the Type A at 120° Section of a 180° Curved Channel [PDF]
پژوهشهای زیرساختهای عمرانی, 2022 A side weir is a hydraulic control structure used in irrigation and drainage systems and combined sewer systems. The Piano Key Weir (PKW) is a new type of long crest weirs that have a relatively simple structure and high economic efficiency structures ...
Mehdi Jamshidi +3 more
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Water Science, 2023 Nonlinear weirs offer a relatively high discharge capacity under low water loads. Their efficiency, however, is decreased at high water loads due to the submergence of the weir outlet key. In the present study, sloping parapet walls with the heights of 2,
Marzieh Hamidinia +3 more
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Journal of Engineering and Sustainable Development, 2023 In recent years, engineers have focused on finding a solution to reduce scouring downstream of piano key weirs. Piano key weirs have high efficiency in flood flow and a higher discharge coefficient.
Ali Qasim Rdhaiwi +2 more
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Experimental Investigation of using the Piano Key Weirs in the Outlet of the Clarifier Structure [PDF]
علوم و مهندسی آبیاری, 2023 Sustainable development and survival depends on environmental protection, especially water. Water treatment aims to produce safe and healthy water, which is possible in water treatment plants.
Youssef Gatezadeh +4 more
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Experimental and numerical analysis of flow hydraulics in triangular and rectangular piano key weirs
Water Science, 2020 Piano key weir is a new type of spillways designed to improve the discharge capacity of dams. Generally, increasing the upstream hydraulic load in piano key weirs results in reduced discharge capacity of the weir.
Rezvan Ghanbari, Mohammad Heidarnejad
doaj +1 more source