Results 1 to 10 of about 53 (46)
Water Practice and Technology, 2022 Abstract A piano key weir (PKW) is a modified version of non-linear weirs and it can be obtained via amending the centerline length of the weir by a small footprint. It is developed to increase the hydraulic performance of the linear weirs via increasing the pass discharge and the energy dissipation.
Dilshad A Haleem
exaly +3 more sources
Flow hydrodynamics near inlet key of Piano Key Weir (PKW)
Sadhana - Academy Proceedings in Engineering Sciences, 2015 This paper presents fundamental outcomes from an experimental study on the hydrodynamic performance near inlet key of Piano Key Weir (PKW). Hydrodynamic performance was tested in a circulated open channel that comprised of PKW and sand bed (d50 = 0.25 mm). Instantaneous velocities were measured at 20 cross sections using Laser Doppler Velocimeter (LDV)
Harinarayan Tiwari +2 more
exaly +3 more sources
EXPERIMENTAL COMPARISON OF FLOW ENERGY LOSS IN TYPE-B AND -C TRAPEZOIDAL PIANO KEY WEIRS (PKWS)
Journal of Engineering and Sustainable DevelopmentAs non-linear weirs with a high flow rate, Piano Key Weirs (PKWs) have attracted the attention of water engineers in recent years. Given the limited information available on the energy losses of these weirs, it is important to investigate the energy ...
Ali Qasim Rdhaiwi +2 more
doaj +2 more sources
Effect of the shape and type of piano key weirs on the flow efficiency
Ain Shams Engineering Journal, 2022 This study evaluates the effect of the piano key weir’s (PKW) shape and type on the flow efficiency for different inlet and outlet keys width ratios (Wi/Wo). The study is performed experimentally and numerically using a CFD model.
Doaa A El-Molla
exaly +3 more sources
Piano Key Weir (PKW)—Improvement in Conventional Geometry for Augmented Discharge Capacity
Water (Switzerland)The conventional piano key weir (PKW), characterized by a rectangularly cranked planform, is an effective discharge structure. Its hydraulic performance is primarily influenced by several geometrical parameters, including crest length, key width, and weir height.
James Yang, Yang James
exaly +2 more sources
A comparative analysis of the energy dissipation efficiency of various piano key weir types
Open EngineeringWater levels in main or sub-channels can be controlled and regulated with the help of weirs. Piano key weirs (PKWs), a type of non-linear weir, include side crests, as well as front and back crests.
Alghazali Najm O. S., Musa Taghreed A.
exaly +2 more sources
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
doaj +1 more source
Developing Discharge Coefficient Formula for Different Piano Key Weir Characteristics [PDF]
Journal of Engineering Research - Egypt, 2022 This study mainly aims to investigate and quantify the influence of piano key weir (PKW) characteristics on its discharge coefficient. Accordingly, based on dimensional analysis, seventy-two experimental runs were carried out using sixteen PKW physical ...
Mohamed Hamed
doaj +1 more source
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
doaj +1 more source
Effects of Nose and Piano Keys Weir Parapet Wall on Floating Woody Debris [PDF]
علوم و مهندسی آبیاری, 2017 A hydraulic structure is a device designed to retain, regulate, or control the flow of water. The most common type of hydraulic structures are weirs. Weirs are overflow structures that stretch across an open channel of water, and are meant to alter the ...
Majid Rahimpour +2 more
doaj +1 more source