Flow and parameter optimization of tapered vane

Solanki, Karan; Sharma, Himanshu; Joshi, Nitin

doi:10.1080/24705357.2020.1771223

Cited by 7 publications

(2 citation statements)

References 37 publications

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“…Generally, submerged vanes are used for river channel stabilization, bank protection, shoaling amelioration, to control and reduce scour, and to control sedimentation at diversions and water intakes [18, 23,29,33,37,39,41,44]. Additionally, submerged vanes can be used to increase the turbulence of ows upstream of bottom outlets of reservoirs and, nally, to increase the amount of evacuated sediment.…”

Section: Application Of Submerged Vanesmentioning

confidence: 99%

Influence of different skew angles of the submerged vane on pressure flushing performance

Beiramipour

Qaderi

Rahimpour

et al. 2022

Preprint

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Siltation is a major threat to the original storage capacity and lifespan of a reservoir. Pressure flushing is an effective measure against siltation through the partial drawdown of the reservoir water level with limited flushed cone volumes in front of the bottom outlet. In this study, a novel configuration with submerged vanes has been proposed and tested experimentally to increase the flushed sediment volume during the pressure flushing operation. In the new configuration, submerged vanes aligned with ten skew angles (θ) of 10°, 20°, 30°, 45°, 70°, 110°, 135°, 150°, 160°, and 170° to flow direction in non-cohesive sediment bed materials were conducted. The results showed that in 45° ≤ θ ≤ 160°, increasing the skew angle increased the flushing cone geometry. The minimum and maximum flushing cone dimensions and volume occurred at skew angles of θ = 45° and 135° ≤ θ ≤ 160° around the bottom outlet. Eventually, nonlinear regression analysis yielded an equation for estimating flushing cone volumes. The developed equation was tested in real case studies of a target reservoir, and an acceptable correlation between calculated and experimental results was obtained.

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Section: Application Of Submerged Vanesmentioning

confidence: 99%

Influence of different skew angles of the submerged vane on pressure flushing performance

Beiramipour

Qaderi

Rahimpour

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Among the different design parameters of submerged vanes, the angle of attack of the vane with the flow is an important parameter, and it has been the subject of various investigations. For example, many researchers have studied the effect of the vane angle of attack on controlling and reducing scour [23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39] .…”

mentioning

confidence: 99%

Influence of different skew angles of the submerged vane on pressure flushing performance

Beiramipour,

Kantoush,

Haghjouei

et al. 2023

Sci Rep

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Siltation significantly threatens a reservoir’s original storage capacity and lifespan. Pressure flushing is an effective measure against siltation through the partial drawdown of the reservoir water level with limited flushed cone volumes in front of the bottom outlet. In this study, a novel configuration with submerged vanes has been proposed and tested experimentally to increase the flushed sediment volume during pressure flushing. In the new configuration, submerged vanes aligned with ten skew angles (θ) of 10°, 20°, 30°, 45°, 70°, 110°, 135°, 150°, 160°, and 170° to the flow direction in noncohesive sediment bed materials were used. The results showed that increasing the skew angle at 45° ≤ θ ≤ 160° increased the flushing cone geometry. The minimum and maximum flushing cone dimensions and volume occurred at skew angles of θ = 45° and 135° ≤ θ ≤ 160° around the bottom outlet. The sediment flushing volume in the presence of submerged vanes at 135° ≤ θ ≤ 160° increased 25 times compared to tests without submerged vanes. Eventually, nonlinear regression analysis yielded an equation for estimating flushing cone volumes. The developed equation was tested in real case studies of a target reservoir, and an acceptable correlation between the calculated and experimental results was obtained.

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Numerical modeling of scour and erosion processes around spur dike

Gupta

Pandey

Raj

2023

CLEAN Soil Air Water

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Spur dikes are popular river training structures used for flow diversion, flood control, bank protection, and improving navigation. This paper aims to study the numerical modeling of scour depth in the vicinity of a rectangular spur dike using the renormalization group (RNG) turbulence model and sedimentary van Rijn model with nested mesh configuration using FLOW‐3D. This study is also carried out to analyze the three turbulence models such as RNG, 𝑘−𝜀, and Large‐Eddy simulation (LES), for estimating the scour depth and evaluating the temporal variation of maximum scour depth. It is observed that scour depth is overpredicted with the LES model configuration used in the present study, as compared to 𝑘−𝜀 and RNG models. Furthermore, the scour depth increases by increasing the bed load coefficient near to the spur dike. Simulated results show a good agreement within a 5% error with experimental results regarding the net change of sediment elevation and scour depth.

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Flow and parameter optimization of tapered vane

Cited by 7 publications

References 37 publications

Influence of different skew angles of the submerged vane on pressure flushing performance

Influence of different skew angles of the submerged vane on pressure flushing performance

Influence of different skew angles of the submerged vane on pressure flushing performance

Numerical modeling of scour and erosion processes around spur dike

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