Results 211 to 220 of about 2,783 (246)

Application of convex streamline theory to circular-crested weir

Biosystems Engineering, 2013
Circular-crested weirs are overflow structures that can be used for flow measurement, water level control in open channels and flood control in reservoirs. Combining Newton's second law for a rectangular fluid particle on a convex streamline with Bernoulli's equation, the differential equation of velocity profile at crest section of circular-crested ...
Jahanshir Mohammadzadeh-Habili, Manouchehr Heidarpour   +1 more
exaly   +2 more sources

A flow field characterization in a circular channel along a side weir

Flow Measurement and Instrumentation, 2016
Abstract Side weirs have been used for centuries in urban drainage and flood control for their ability to divert high incoming flow rates. The flow along a side weir may be studied by means of different approaches. However, although the question of side weir has been debating for many decades, there are few studies on the local hydraulic ...
Francesco Granata, Rudy Gargano, Simone Santopietro   +2 more
exaly   +3 more sources

Half-Round Circular Crested Weir: On Hysteresis, Instabilities, and Head–Discharge Relationship [PDF]

Journal of Irrigation and Drainage Engineering - ASCE, 2020
Waters flowing over rounded weirs experience a rapidly accelerated flow region near the crest. The head-discharge relationship of a half-round crested weir was tested physically under carefully controlled flow conditions for a weir design with a small ...
Hubert Chanson, Chanson Hubert
exaly   +2 more sources

Numerical Simulation of Free Surface and Flow Field Turbulence in a Circular Channel with the Side Weir in Subcritical Flow

International Journal of Nonlinear Sciences and Numerical Simulation, 2017
When flow surface is higher than of a side weir crest, the overflow spilt over the crest and divert into a side channel. These structures are extensively used in urban sewage disposal networks, water supply systems, and drainage and flood diversion ...
Hamed Azimi, Saeid Shabanlou
exaly   +2 more sources

Application of potential flow to circular-crested weir

Journal of Hydraulic Research/De Recherches Hydrauliques, 2008
Manouchehr Heidarpour, Amir Hamzeh Haghiabi   +1 more
exaly   +2 more sources

circular weir at the entry

2014
exaly   +2 more sources

Overflow characteristics of circular-crested weirs

Journal of Hydraulic Research, 2010
Circular-crested weirs are one of simplest types of hydraulic structures used for discharge measurement and regulation of open channel flow. In the present study, the flow over a circular-crested weir was simulated with an irrotational vortex to determine the weir discharge coefficient and velocity values over the crest.
Sara Bagheri, Manouchehr Heidarpour
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

Rectangular Lateral Weirs in Circular Open Channels

Journal of Hydraulic Engineering, 1995
A theoretical expression for the outflow through a rectangular lateral weir located in a circular open channel is derived using the results of an existing theory of lateral efflux through a two-dimensional conduit outlet. The development of the present model is similar to a procedure that earlier yielded the theoretical expression for the outflow ...
Amruthur S. Ramamurthy, Weimin Zhu, Diep Vo   +2 more
openaire   +1 more source

Critical Flow over Circular Crested Weirs

Journal of Hydraulic Engineering, 2008
The critical flow principle is a useful approach for the hydraulic analysis of round-crested weirs due to their single head-discharge relationships. The hydraulics of circular-crested weirs is examined using simplified models incorporating streamline curvature effects, comparing their predictions with experimental data.
O. Castro-Orgaz, J. V. Giráldez, J. L. Ayuso   +2 more
openaire   +1 more source