Results 1 to 10 of about 217 (176)
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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The effect of the energy head and the inlet and outlet key width on discharge coefficient of Piano key weir [PDF]
فناوریهای پیشرفته در بهرهوری آب, 2023 IntroductionPiano key weir is a form of nonlinear weir designed to improve the discharge capacity of spillway structures. Due to the increase in effective length, they can be used in dam spillways or water regulation structures.
Shima Komeili, Mohammad Mehdi Heidari
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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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Calculation analysis on the discharge capacity of Piano Key weir and relative influencing factors
Shuili Shuiyun Gongcheng Xuebao, 2022 In recent years, the problem of insufficient discharge capacity of the existing hydraulic projects has become more and more serious due to the frequent occurrence of extreme floods.
LI Yanfu +4 more
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Experimental Study of Effect of Flow Drop Height on Downstream Bed Topography of Type-A Trapezoidal Piano Key Weir [PDF]
رویکردهای نوین در مهندسی آب و محیط زیست, 2022 : Predicting the extent of local scouring downstream of hydraulic structures has been one of the topics of interest to researchers in recent years. In this research, downstream scouring of a trapezoidal piano key weir under changes in the hydraulic ...
Chonoor Abdi Chooplou +4 more
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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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Energy Dissipation of Type a Piano Key Weirs [PDF]
Water, 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.
Kam R. Eslinger, Brian M. Crookston
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