Erosion Control Solutions with Case Studies

Pietro, Paolo Di; Mahajan, Ratnakar R.

doi:10.1007/978-981-16-4783-3_6

Cited by 4 publications

(3 citation statements)

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“…Furthermore, it can be observed that at control point 8, the experiments with higher flow rates, such as 0.025 and 0.03, decrease erosion by 30 % to 60 % compared to their lowest The above is confirmed by [16], where they proposed and evaluated a simulation model of scour in walls at different flows. Likewise, the latter coincides with [17], which ensures that in the straight channel, the removal of sediments from the bottom of the channel occurs mainly at the first control points, due to the shock of the flow at the entrance that drags the sediment.…”

Section: Three-dimensional Numerical Modelmentioning

confidence: 54%

“…This process occurs due to the decrease in the width of the channel and the degree of curvature exerted along the longitudinal wall, producing high flow velocity levels near the bed, resulting in progressive deformation and undermining. Furthermore, the increased velocity in the channel bed leads to a scour hole of higher magnitudes [17,21].…”

Section: Fig 7 Average Flow Velocity At Different Flow Values and Lon...mentioning

confidence: 99%

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Analysis of a three-dimensional numerical modeling approach for predicting scour processes in longitudinal walls of granular bedding rivers

Calixto,

Zambrano,

Castaño

et al. 2023

Eureka: PE

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In rivers, longitudinal walls are protective structures that are directly supported on the riverbank are frequently used as hydraulic prevent the current from eroding the bank and causing scouring. However, these structures have the potential to block flow and produce erosive processes that progressively worsen scour in their area, leading to faulting and other problems. The current study used Flow-3D software to understand the scour process at the base of longitudinal walls in rivers with a well-graded granular bed. Experimental data from a physical model replicating a river with a longitudinal wall and a well-graded granular bed were used to validate the model. The investigation examined the average flow velocity and its effects on scour behavior along the longitudinal wall using the Flow-3D program. The findings showed that the Flow-3D model could improve the evaluation of debugging processes, because it provided a useful answer that closely matched the experimental data derived from the physical model. Validation with a 0.07 m mesh demonstrated that the Flow-3D model could faithfully simulate the scour process along the longitudinal wall. Overall, the findings of this study suggest that the Flow-3D software can be a useful tool for predicting the scouring process in rivers with well-graded granular beds and longitudinal walls. This is particularly important for engineers and researchers who are interested in designing and optimizing hydraulic structures to mitigate the effects of scouring, because it provided a useful answer that closely matched the experimental data derived from the physical model

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Section: Three-dimensional Numerical Modelmentioning

confidence: 54%

Section: Fig 7 Average Flow Velocity At Different Flow Values and Lon...mentioning

confidence: 99%

Analysis of a three-dimensional numerical modeling approach for predicting scour processes in longitudinal walls of granular bedding rivers

Calixto,

Zambrano,

Castaño

et al. 2023

Eureka: PE

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“…Throughout the different experiments, the inlet flow rate was kept constant, which added to the slope, and the clash of the flow against the sediment maintained a turbulent flow during the 220 min of modeling. According to the data obtained (Figure 4), the slope of the channel affects the maximum scour depth, as a greater slope increases the scour depth and creates a removal of sediment from the bottom of the riverbed, mainly in the first checkpoints, due to the shock of the flow at the entrance that drags the sediment [36]. Although there are certain variations in some control points concerning the scour depth, the scour along the longitudinal wall on the left and right sides of the granular bedding behaves similarly in each of the conditions analyzed in the investigation.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Local Scour along the Base of Longitudinal Training Walls

Cely Calixto,

Galvis Castaño,

Carrillo Soto

2023

Water

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This study proposes a new empirical model for estimating local scour along the base of longitudinal training walls for granular riverbeds. The model’s performance was rigorously assessed through experiments conducted in an open-channel flume, encompassing variations in granulometric characteristics, slope, and flow rates. The investigation involved a comparative analysis of six commonly employed equations for scour estimation. The results consistently demonstrated a tendency of the selected equations to overestimate scour depth within the longitudinal structures. In contrast, the new proposed equation considers factors such as the well-graded granular bedding represented by the Coefficient of uniformity (Cu) and the embedment of the longitudinal wall. This allows for a more robust identification of the scour behavior of longitudinal walls. This research enhances our comprehension of local scour in riverbeds. It provides engineers and researchers with a valuable tool for more accurate predictions, thereby contributing to the improved design and maintenance of river environment structures.

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