Results 21 to 30 of about 135 (128)
Applied Water Science, 2020 Crest length is an important parameter in influencing the discharge handling capacity of a weir. Nonlinear weirs with longer crests are cost effective alternatives for those existing dam structures which are more susceptible to failure due to loss of ...
Munish Kumar +3 more
doaj +1 more source
Review of periodical literature for 2021
, 2023 The Economic History Review, Volume 76, Issue 1, Page 342-353, February 2023.
Spike Gibbs
wiley +1 more source
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
doaj +1 more source
Experimental study of discharge Coefficient of Piano Key Side Weir in 45-Degree Sector of a curved channel [PDF]
مهندسی منابع آب, 2020 A new type of Long-crested weirs is Piano Key weir that allows the reservoir to run at a higher level. The use of a Piano Key weir as side weir allows for more drainage, due to the geometric shape of the channel and the impact of centrifugal force on the
Babak Ghobadi, Mojtaba Saneie
doaj
Experimental and Simulation Studies on Water Discharge Coefficients of Rectangular Piano Key Weirs
International Journal of Technology, 2022 The piano key weir (PKW) is a developed type of labyrinth spillway with the ability to transfer large amounts of discharge by keeping executive costs constant.
Vafa Rezaei +3 more
doaj +1 more source
Apron and Cutoff Wall Scour Protection for Piano Key Weirs [PDF]
Water, 2021 Piano key (PK) weirs are used in a variety of flow control structure applications, including spillway crests and open channel diversion structures. However, to the best of authors’ knowledge, structure-specific design guidance for scour mitigation is still needed.
Lantz, Wyatt +2 more
openaire +2 more sources
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
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
doaj +1 more source
Experimental Study of Flow Hydraulic in Piano Key Weirs at Different Parapet Wall [PDF]
علوم و مهندسی آبیاری, 2016 Piano key weirs are a new type of Weirs that are designed to improve dams discharge capacity. Generally in increasing the upstream head water decreases the discharge capacity this tyre of weir.
Bahareh Yarmohammadi, Javad Ahadian
doaj +1 more source
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.
Amr A. Bekheet +3 more
doaj +1 more source