On the effect of flow regime and slope of the channel bed on the hydraulic performance of the sharp-crested rectangular side weir: a numerical simulation

Kalateh, Farhoud; Aminvash, Ehsan; Abraham, John

doi:10.1080/19648189.2024.2314112

Cited by 1 publication

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References 29 publications

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“…The RNG disturbance model includes two equations, which are presented in Equations ( 10) and ( 11), respectively. The reason for using the RNG turbulence model is its ability to simulate a flow with a large computational mesh, good performance in simulating flow separation, superior results with sudden strain and curvature, as well as success in previous numerical studies (Parsaie et al 2016;Simsek et al 2016;Daneshfaraz et al 2020;Ghaderi & Abbasi 2021;Kalateh et al 2024aKalateh et al , 2024b.…”

Section: Numerical Modelingmentioning

confidence: 99%

Numerical simulation of supercritical flow in sudden contractions flumes

Süme

2024

AQUA — Water Infrastructure, Ecosystems and Society

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In this research, the effect of sudden non-continuous contraction on the energy dissipation of supercritical flows was numerically investigated. This study focuses on energy dissipation in sudden contractions in supercritical flows. The numerical models were studied using FLOW-3D software and the random number generator (RNG) turbulence model. The laboratory tests were performed on sudden contractions of 10–15 cm and used shapes such as geometric trapezoidal and semicircular. Numerical simulations were carried out at a distance of 1.5 m from the supercritical flow generator gate, at a fixed opening of 2.6 cm, with the Froude number in the range of 2.5–7 and the relative contraction in the range of 8.9–9.73. This laboratory study found that as the Froude number of the upstream flow increases, the energy dissipation increases in the upstream (ΔE/E0) and downstream (ΔE/E1). For the 15 cm contraction, the results indicated that the energy loss compared with section A is 48.25% and compared with section B, it is 69.5% more than a free hydraulic jump in this channel. According to the conclusion, this value in trapezoidal constriction is 45.73 and 63.6% higher than in free hydraulic jump, respectively.

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Section: Numerical Modelingmentioning

confidence: 99%

Numerical simulation of supercritical flow in sudden contractions flumes

Süme

2024

AQUA — Water Infrastructure, Ecosystems and Society

View full text Add to dashboard Cite

show abstract

On the effect of flow regime and slope of the channel bed on the hydraulic performance of the sharp-crested rectangular side weir: a numerical simulation

Cited by 1 publication

References 29 publications

Numerical simulation of supercritical flow in sudden contractions flumes

Numerical simulation of supercritical flow in sudden contractions flumes

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