Results 151 to 160 of about 435 (189)

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
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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

Parametric and nonparametric regression models in study of the length of hydraulic jump after a multi-segment sharp-crested V-notch weir [PDF]

Water Science and Technology: Water Supply, 2020
A multi-segment sharp-crested V-notch weir (SCVW) was used both theoretically and experimentally in this study to evaluate the length of the hydraulic jump at the downstream of the weir.
Babak Vaheddoost, Amin Gharehbaghi, Vaheddoost Babak   +2 more
exaly   +2 more sources

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
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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

Flow Over Sharp‐Crested Plate Weirs

Journal of Irrigation and Drainage Engineering, 1987
For flow past a two‐dimensional sharp‐crested weir located at the end of a horizontal rectangular channel, experimental results related to velocity and pressure distributions in the region of the nappe close to the weir crest section and the pressure distribution on the weir face were obtained.
Amruthur S. Ramamurthy, Udoyara S. Tim, M. V. J. Rao   +2 more
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Flow over rectangular sharp-crested weirs

Irrigation Science, 2009
Sharp-crested weirs are the simplest form of over-flow spillway that commonly used to determine the flow rate in hydraulic laboratories, industry and irrigation systems, where highly accurate discharge measurements are needed. In this study, the experimental upper and lower nappe profiles in rectangular sharp-crested weirs are fitted by quadratic and ...
Sara Bagheri, Manouchehr Heidarpour
openaire   +1 more source