Results 81 to 90 of about 1,034 (154)

Rotation, combined structure, semi cylindrical weir- gate, energy loss, discharge coefficient. [PDF]

open access: yesمهندسی منابع آب, 2014
The combined weir- gate is a structure which may replace weir and gate in channels. The semi cylindrical weir- gate has a higher discharge coefficient in comparison with the sharp crested weir- gate because of the curvature on the weir section which the ...
M. M, A. S, S. Z
doaj  

Hydraulic characteristics of semi- circular sharp crested weirs

open access: yesTikrit Journal of Engineering Sciences, 2013
        In this research the hydraulic characteristics of sharp crested weirs with semi- circular shape were studied, the study was depended on the dimensional analysis which confirmed by experimental work.
Edan I. Ghadban
doaj  

Application of the Evolutionary Methods in Determining the Discharge Coefficient of Triangular Labyrinth Weirs

open access: yesعلوم آب و خاک, 2019
A labyrinth weir is a nonlinear weir folded in the plan-view which increases the crest length and the flow rate for a given channel width and an upstream flow depth.
M. Majedi Asl, M. Fuladipanah
doaj  

Investigation of trapezoidal sharp-crested side weir discharge coefficients under subcritical flow regimes using CFD

open access: yesApplied Water Science, 2019
Side weirs are utilized to regulate water surface and to control discharge and water elevation in rivers and channels. Here, the discharge coefficient for trapezoidal sharp-crested side weirs (TSCSW) and their affecting parameters are numerically ...
Amir Ghaderi   +3 more
doaj   +1 more source

Effect of weir´s theoretical discharge coefficient on discharge measurements in small Andean streams

open access: yesLa Granja: Revista de Ciencias de la Vida, 2022
Andean ecosystems provide important hydrological services for downstream communities. Due to this importance, several hydrological studies have been carried out in recent years, with emphasis on hydrological processes identification and land use change ...
Mario Guallpa   +2 more
doaj  

Physical modelling of low-cost modifications to the Crump Weir in order to improve fish passage : evelopment of favourable swimming conditions and investigation of the hydrometric effect [PDF]

open access: yes, 2006
More than 350 Crump-type weirs (which are triangular in profile) form part of the Environment Agency's hydrometric network in rivers across England and Wales.
Servais, S A
core  

Three dimensional flow simulation over a sharp-crested V-Notch weir

open access: yes, 2020
Thin-plate weirs are widely used to monitor the flow rate in open channels. Thereby, three dimensional (3D) modeling of the flow over a weir in an open channel can be considered as one of the main topics in hydraulic science. In this study, the flow over
Vaheddoost, Babak   +4 more
core   +1 more source

Flow characteristics at trapezoidal broad-crested side weir

open access: yes, 2015
Broad-crested side weirs have been the subject of numerous hydraulic studies; however, the flow field at the weir crest and in front of the weir in the approach channel still has not been fully described.
Zachoval Zbyněk, Říha Jaromír
core   +1 more source

Head-discharge relationships for rectangular flat-crested slit weir

open access: yes, 2015
The rectangular weir is the most commonly used device in channel and laboratory for flow measurement due to its simplicity. The rectangular sharp-crested slit weir has been shown to be good at measuring small (< 0.005 m3 /s) flow rates.
Nur Asiha Binti Sazali
core  

Head Discharge Relationship of Thin Plated Rectangular Lab Fabricated Sharp Crested Weirs

open access: yesJournal of Applied Fluid Mechanics, 2016
Measuring open channel flows has been a major challenge at the field level. Because of the fact that the measuring devices are to be made from procedures and materials prescribed in standard codes.
S. A. Tekade, A. D. Vasudeo
doaj  

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