Evaluation of angled splitters as scour countermeasure at circular piers

Ibrahim, Mohamed M.; Refaey, Mahmoud A.; Hashem, Hadeer M.; Ibraheem, Ahmed M.

doi:10.1016/j.aej.2023.05.067

Cited by 1 publication

(1 citation statement)

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“…It has been verified in flume tests that triangular rows have better scour resistance in most cases, and the effect is further improved by combining them with bed sill [27]. The spoiler mainly affects the direction of water flow to divert it in front of the pile, and its protective effect is affected by the angle of the top corner [28].As for the spoiler structure set in the pile foundation part, we can refer to the scour protection of bridge abutment and consider adopting the simple structure of circular type scour guard ring [29,30]. After the flume test and numerical model simulation studies, it can be determined that a more obvious effect of scour prevention can be discerned [31].…”

Section: Introductionmentioning

confidence: 94%

Numerical Investigation of Local Scour Protection around the Foundation of an Offshore Wind Turbine

Zhang,

Yu,

Yin

et al. 2024

JMSE

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The pile foundations of offshore wind turbines face serious problems from scour damage. This study takes offshore wind turbine monopile foundations as the research object and proposes an innovative anti-scour device for the protection net. A numerical simulation research method based on CFD-DEM was used to model the local scour of the pile foundation and protection net. The validity of the numerical model was verified by comparing the simulation results of the local scour of the pile foundation under the condition of clear water scour and the results of the flume test. The permeability rate was defined to characterize the overwatering of the protection net, and numerical simulations were performed for protection nets with permeability in the range of 0.681 to 0.802. The flow field perturbations, changes in washout pit morphology, and changes in washout depth development due to the protective netting were also analyzed. It was found that the protection net can effectively reduce the flow velocity around the pile, cut down the intensity of the submerged water in front of the pile, and provide scouring protection. Finally, the analysis and summary of the protection efficiency of the different protection nets revealed that the protection efficiency within the nets was consistently the highest. On the outside of the net, the protection efficiency is poor at a small permeability rate but increases with an increasing permeability rate.

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