Laboratory Investigation of the Effect of Wall Slope on the Discharge Coefficient of Trapezoidal Arced Labyrinth Weirs [PDF]
علوم آب و خاک, 2023 Weirs of the labyrinth have some advantages including the high coefficient of the irrigation of weir and the low fluctuation of water when the flow passes over the crest of the weir.
M. Majedi Asl +2 more
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Discharge Coefficient Estimation of Sharp-Crested Curved-Plan Spillways using Soft Computing Approaches [PDF]
Computational Engineering and Physical Modeling, 2023 The use of labyrinth and side weirs and the design of curved-plan form weirs are inevitable in some cases due to design and implementation limitations. The present study proposes dimensionless equations based on the vertex angle and the head ratio over ...
Ali Foroudi, Reza Barati
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Experimental Study of Discharge Coefficient of Symmetric and Asymmetric Rectangular Labyrinth Weirs
علوم آب و خاک, 2022 The discharge coefficient of labyrinth weirs increases with increasing the crest length in a certain width range. The present research was carried out in a laboratory flume with a length of 8 m, a width of 0.6 m, and a height of 0.6 m.
H. Elahifar +3 more
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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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Determination of Discharge Coefficient for both Semicircular and Triangular Labyrinth Weirs
Polytechnic Journal, 2021 A Labyrinth weir is a type of nonlinear weir folded in plan-view, with the ability to pass a large flow at low heads due to an increase in the effective length of the weir crest for a given channel width.
Tara H. Aurahman +2 more
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Modeling of discharge Coefficient of nonlinear weirs with QNET and SVM methods [PDF]
Journal of Hydraulic StructuresIn this study, we investigate the discharge coefficient prediction of arched labyrinth weirs with a cycle angle of 6 degrees, employing 243 data series.
Mahdi Majedi-Asl +3 more
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Oxygen Transfer at Labyrinth Weirs
Journal of Japan Society on Water Environment, 2004 It is well known that oxygen transfer in an irrigation and drainage system occurs on the flow surface by reaeration as agricultural water flows down the waterway, and that water management structures, such as drops or weirs, largely improve this oxygen transfer.
TAKAKI, Kyoji +2 more
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IOP Conference Series: Earth and Environmental Science, 2023 Abstract The labyrinth weir that is viewed from above has a zig-zag shape. The main objective is to extend the spillway so that the water level upstream of the weir is as low as possible or to increase the discharge capacity. The shapes of labyrinth weirs based upon cycle shape are triangular, trapezoidal, and rectangular.
N B Rustiati +3 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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Analysis of various parameters affecting weir design and fabrication of Weirs: An Overview
MATEC Web of Conferences, 2018 Several geometric parameters influence weir discharge and it is explained in our present study. The PK weir is more efficient than rectangular labyrinth weir due to reduction in entrance losses of PK weir inlet key geometry.
Vanishree B. Rao, Manjula R.
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