Control of sediment entry into an intake canal by using submerged vanes

Sruthi, T. K.; Ranjith, K. B.; Chandra, Venu

doi:10.1063/1.4998378

Cited by 8 publications

(7 citation statements)

References 21 publications

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“…The difference between the two experiments was the existence of a vane-field in the main channel in the VF case. The vane-field was designed according to some recommendations of Odgaard and Wang [14], and taking into account the data of Barkdoll et al [6], Karami et al [10] and Sruthi et al [3]. Thus, it comprised two rows aligned with the main channel.…”

Section: Experimental Set-up and Proceduresmentioning

confidence: 99%

“…In nature, bifurcations occur, for example, in braided rivers and deltas Bertoldi et al [1]. Examples of manmade lateral diversions include (see, among others, Nakato et al [2], Sruthi et al [3], Wang et al [4]) the entrance to a secondary channel (i) used as a by-pass for flood alleviation, (ii) integrated into a navigation or irrigation project, or (iii) connected to a settling basin designed to reduce the sediment load passing to a water system. Therefore, depending on the objective of the man-made lateral diversion, it is frequently necessary to control the sediment entrainment into the side channel, which can be difficult to achieve.…”

Section: Introductionmentioning

confidence: 99%

“…According to Odgaard and Wang [14], in most straight and curved channels the vanefields perform better for vane heights from 0.2 to 0.4 times the flow depth and vane lengths equal to 2 to 3 times the vane height. These results have been used so far in the design of vane-fields in front of diversions (Barkdoll et al [6]; Karami et al [10], Sruthi et al [3], and Nakato et al [13]. The capacity of vane-fields to control the sediment entry into a lateral diversion (second topic) was also assessed by Barkdoll et al [6].…”

Section: Introductionmentioning

confidence: 99%

“…They also concluded that the vane-field led to more water and fewer sediments moving into the diversion. Further studies on the design of vane-fields were made by Sruthi et al [3], who investigated the effects of vane alignment and the number of vane rows on the amount of sediments diverted into a θ = 45 • diversion channel. The best desilting performance was achieved (Sruthi et al [3]) for a vane-field formed by two rows of vanes with a spacing between the vanes of approximately half of the diversion's width (b ≈ W d /2), installed at a skew angle of β = 15 • , the skew angle being the smaller angle between the alignments of the main channel and the vanes (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

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Effect of a Submerged Vane-Field on the Flow Pattern of a Movable Bed Channel with a 90° Lateral Diversion

Baltazar

Alves

Bombar

et al. 2021

Water

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This laboratory study focused on the effect of a submerged vane-field on the flow pattern and bed morphology near and inside the entrance reach of a movable bed 90° lateral diversion. The system was modelled under live bed conditions for a water discharge ratio of ≈0.2. Two experiments were run until bed equilibrium was reached: with and without a vane-field installed close to the diversion entrance to control the transfer of sediments into the diversion channel. The equilibrium bed morphology and the associated 3D flow field were measured in great detail. The bed load diverted into the diversion was reduced by approximately one quarter due to the action of the vane-field. The vanes prevented the formation of the diversion vortex in the main channel, upstream of the diversion’s entrance, thus contributing to that decrease. They also created a main channel vortex that started at the most upstream vanes and further decreased the amount of bed load entering the diversion. The flow separation zone inside the diversion was larger with vanes, but conveyance was balanced through a slightly deeper scour trench therein. The flow structures described were confirmed through the measurements of the turbulent kinetic energy.

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Section: Experimental Set-up and Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of a Submerged Vane-Field on the Flow Pattern of a Movable Bed Channel with a 90° Lateral Diversion

Baltazar

Alves

Bombar

et al. 2021

Water

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“…Sedimentation processes in nearshore areas can be responsible for the excessive sediment deposition commonly observed in cooling water intakes in power plants. As a result, the carrying capacity of the water intake can be drastically reduced, by decreasing its effective area of transport [98].…”

Section: Study Casementioning

confidence: 99%

Physically interpretable machine learning algorithm on multidimensional non-linear fields

Mouradi,

Goeury,

Thual

et al. 2020

Preprint

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In an ever-increasing interest for Machine Learning (ML) and a favorable data development context, we here propose an original methodology for data-based prediction of two-dimensional physical fields. Polynomial Chaos Expansion (PCE), widely used in the Uncertainty Quantification community (UQ), has recently shown promising prediction characteristics for one-dimensional problems, with advantages that are inherent to the method such as its explicitness and adaptability to small training sets, in addition to the associated probabilistic framework. Simultaneously, Dimensionality Reduction (DR) techniques are increasingly used for pattern recognition and data compression and have gained interest due to improved data quality. In this study, the interest of Proper Orthogonal Decomposition (POD) for the construction of a statistical predictive model is demonstrated. Both POD and PCE have widely proved their worth in their respective frameworks. The goal of the present paper was to combine them for a field-measurement-based forecasting. The described steps are also useful to analyze the data. Some challenging issues encountered when using multidimensional field measurements are addressed, for example when dealing with few data. The POD-PCE coupling methodology is presented, with particular focus on input data characteristics and training-set choice. A simple methodology for evaluating the importance of each physical parameter is proposed for the PCE model and extended to the POD-PCE coupling.

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The effects of different lateral channel discharge on one row of submerged vanes

Mhsen,

Hilo

2023

4th International Scientific Conference of Alkafeel University (Iscku 2022)

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Control of sediment entry into an intake canal by using submerged vanes

Cited by 8 publications

References 21 publications

Effect of a Submerged Vane-Field on the Flow Pattern of a Movable Bed Channel with a 90° Lateral Diversion

Effect of a Submerged Vane-Field on the Flow Pattern of a Movable Bed Channel with a 90° Lateral Diversion

Physically interpretable machine learning algorithm on multidimensional non-linear fields

The effects of different lateral channel discharge on one row of submerged vanes

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