Optimization of submerged vane parameters

Sharma, Himanshu; Jain, Bhavesh; Ahmad, Z.

doi:10.1007/s12046-016-0477-8

Cited by 19 publications

(4 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a result, the dispersal of depth, velocity and sediment transport may vary in the area that the vanes have an influence on [5]. A study was conducted to determine the optimum parameters of the vane [6]. The study recommended that the vane's angle should be 30 degrees to ensure maximum vorticity.…”

Section: Literature Reviewmentioning

confidence: 99%

Morphological changes of Cairo West power plant intake while using submerged vanes

Eizeldin

Yasser

2022

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Lateral intake structures suffer from sediment deposition and instability of flow path which may have a negative influence on the efficiency of power plants that use river intakes as a primary source for their cooling system. This study aims to experiment the usage of submerged vanes as a mitigation method and determine their effectiveness in decreasing sediment deposition. A numerical model was constructed using DELFT3D of a reach that is located in the Nile River including the intake structure. Several scenarios were tested to optimise several parameters such as the usage of one or two rows of vanes and the distance of the vanes from the lateral intake. The results generated from the model showed that using two rows of vanes provided a 30% reduction of erosion in front of the intake compared to the base case and a 33% reduction in the volume of sediment entering the intake. Moreover, a 36% reduction of sediment volume was observed compared to the base case when the vanes were placed at a distance that is equivalent to 0.3 the intake’s opening. The output of the model showed that it is more optimal to use two rows of submerged vanes at a distance that is equivalent to 0.3 the intake’s opening.

show abstract

Section: Literature Reviewmentioning

confidence: 99%

Morphological changes of Cairo West power plant intake while using submerged vanes

Eizeldin

Yasser

2022

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…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

View full text Add to dashboard Cite

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.

show abstract

“…Parallelogram and tapered plates and even curved vanes are also used in some cases [4,11]. The vane size, number, and spacing are governed by river width and bend curvature [5,24,25]. Typically, the submerged vane height is 0.2-0.4 times the local water depth.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Modeling for Solutions of Sediment Deposition in a Low-Land Reservoir with Multigate Sluice Structure

et al. 2022

View full text Add to dashboard Cite

At the multigate sluice structure on a fluvial river, undesired sediment deposition affects the normal operation of the reservoir in question. Physical and numerical models are hybridized to help explore flow and sedimentation patterns. Field and laboratory investigations show that the deposition is attributable to the formation of large recirculation zones at low and medium discharges. As a potential countermeasure, an array of guide vanes is recommended to cope with the concern. Their attack angle with the flow is a dominant parameter that needs to be evaluated. Tests in the fixed-bed model demonstrate that the vanes bend the reservoir flow towards the sluice and suppress the circulation zones along both banks. The favorable range of attack angle is 15°‒20°. With the examination of sedimentation of both bed and suspended loads, the numerical modeling indicates that the sediment-removal efficiency increases with an increase in attack angle. By weighing the flushing efficiency and the risk of local scouring at the vanes, the 15° vane layout is recommended. This study is expected to provide a reference for guide-vane design in similar situations.

show abstract

Optimization of submerged vane parameters

Cited by 19 publications

References 19 publications

Morphological changes of Cairo West power plant intake while using submerged vanes

Morphological changes of Cairo West power plant intake while using submerged vanes

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

Hybrid Modeling for Solutions of Sediment Deposition in a Low-Land Reservoir with Multigate Sluice Structure

Contact Info

Product

Resources

About