Results 111 to 120 of about 1,034 (154)

Discharge formula for rectangular sharp-crested weirs

Flow Measurement and Instrumentation, 2011
Abstract Sharp-crested rectangular weirs used for discharge measurement in channels and laboratories are experimentally investigated. Height and width of weir plate are the two parameters characterizing the head-discharge relationship. Laboratory experiments are conducted by measuring the discharge and the head over the weir for variable weir heights
Ismail Aydin, A Burcu Altan-Sakarya
exaly   +3 more sources

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Oblique rectangular sharp-crested weir

Water Management, 2003
Among discharge flowmeters, the rectangular sharp-crested weir is one of the most popular and accurate, as well as being easy to work with. Using the standard weir, with the help of the conventional weir equation and Rehbock's or a similar standard formula for the discharge coefficient (Cd), the flow can be easily calculated.
S. M. Borghei, Z. Vatannia, M. Ghodsian, M. R. Jalili   +3 more
openaire   +1 more source

Design and Calibration of a Compound Sharp-Crested Weir

Journal of Hydraulic Engineering, 2005
This paper describes the design and calibration of a compound sharp-crested weir consisting of two triangular parts with different notch angles. This weir provides accurate measurement for a wide range of flows without discontinuities. The lower triangular part of the weir handles the normal range of discharges at the measurement structure while the ...
Juan Reca
exaly   +2 more sources

A note on sharp-crested weirs and weirs of finite crest length

Canadian Journal of Civil Engineering, 2012
This note presents a brief comparison between the discharge over a sharp-crested weir and a finite crest length weir, with either a sharp-edged or rounded entrance, for any given head over the weir. It has been found that even though in general, the sharp-crested weir passes more flow than the finite crest length weir, there is a small range in which ...
Amir Hossein Azimi, Nallamuthu Rajaratnam, David Z. Zhu   +2 more
openaire   +1 more source

Skimming Properties of Sharp-Crested Weirs

Journal of Irrigation and Drainage Engineering, 2020
AbstractWeirs are structures that allow uppermost layers of liquids to flow by gravity downstream.
openaire   +1 more source

A note on circular sharp-crested weirs

Canadian Journal of Civil Engineering, 1991
A simple approach is proposed to determine the discharge coefficient of sharp-crested, thin plate circular weirs. The model developed incorporates the effects of the width of the approach channel and the height of the weir crest above the channel floor on the weir discharge coefficient. The model is verified using experimental data.
R. Balachandar, Silvana Sorbo, A. S. Ramamurthy   +2 more
openaire   +1 more source

Sharp-crested weirs formula improvement

2018
W artykule poddano analizie metody określania przepustowości jazów cienkościennych oraz zależności wyliczane na ich podstawie. W większości przypadków do tego rodzaju obliczeń wykorzystuje się empiryczne stałe przepustowości uzyskiwane na podstawie badania niewielkich modeli jazów cienkościennych, w odniesieniu do małego zakresu czynników operacyjnych.
Korniichuk, Volodymyr, Bezusyak, Olexander, Kirvel, Ivan   +2 more
openaire   +1 more source

Pressure And Velocity Distribution For Sharp-Crested Weirs

Journal of Hydraulic Research, 1971
(1971). Pressure And Velocity Distribution For Sharp-Crested Weirs. Journal of Hydraulic Research: Vol. 9, No. 2, pp. 241-248.
N. Rajaratnam, D. Muralidhar
openaire   +1 more source

Numerical simulation of sharp-crested weir flows

Canadian Journal of Civil Engineering, 2009
The sharp-crested weir in a rectangular open channel can be used as a simple and accurate device for flow measurement and control in open channels. However, in the past, the solution to this problem was found mainly on the basis of experimental data or through the development of simplified theoretical expressions.
J. Qu, A.S. Ramamurthy, R. Tadayon, Z. Chen   +3 more
exaly   +2 more sources

Flow Profiles Over Sharp-Crested Weirs

Journal of the Hydraulics Division, 1968
A large number of investigations have been conducted to predict the lower and upper nappes, the most notable among them being those of Bazin and the United States Bureau of Reclamation, (USBR); an extensive review of these investigations has been given by Chow.
Nallamuthu Rajaratnam, Kanakatti Subramanya, Durbakula Muralidhar   +2 more
openaire   +1 more source