Simulating wave overtopping on a complex coastal structure using SPH

Mokos, Athanasios; Carmigniani, Rémi; Leroy, Agnès; Violeau, Damien

doi:10.1080/23249676.2020.1719221

Cited by 6 publications

(10 citation statements)

References 37 publications

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“…A case of simulating regular wave propagation on a complex coastal structure is studied in this chapter. The studied model is referred from Mokos et al [33], which concerns the simulation of wave-overtopping on a complex coastal structure by using SPH. In this chapter, a summary of the complex coastal structure elements is given, followed by the detailed simulation domain setup process.…”

Section: Resultsmentioning

confidence: 99%

“…The simulation data is compared with experimental measurement to determine model validation. The measurements of the physical experiment are based on the figures of the Mokos et al [33] report. A Matlab GUI subroutine named Image2Data [41] is used to obtain accurate physical experiment data from Mokos' report [33].…”

Section: Resultsmentioning

confidence: 99%

“…The measurements of the physical experiment are based on the figures of the Mokos et al [33] report. A Matlab GUI subroutine named Image2Data [41] is used to obtain accurate physical experiment data from Mokos' report [33]. The free surface position at designed wave gauges and the overtopping volume are studied.…”

Section: Resultsmentioning

confidence: 99%

“…For many of these structures, there are existing empirical formulas and guidelines as design reference. However, new and complex designs, such as the double-dike structure reports by Mokos et al [33] don't have benchmarks to evaluate and require thorough experimental and numerical assessment. The novel double-dike structure from Mokos et al [33] aimed to improve the ability to prevent flooding and had an extended vertical structure that created a drastic change in geometry, which caused challenges to the computational grid.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Numerical Investigation on Wave-Overtopping at a Double-Dike Defence Structure in Response to Climate Change-Induced Sea Level Rise

Jin

Wang

Kamath

et al. 2022

Fluids

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Climate change has tremendous economic and environmental impacts on coastal areas and threatens human lives and livelihoods in generally densely populated coastal communities. Climate change-induced sea level rise (SLR) is a particular risk factor for coastal and low-lying areas. Therefore, the study on the overtopping of coastal structures in a changing climate is a critical topic for coastal protection and adaptation. As most coastal areas have shallow water conditions, the open-source nonhydrostatic shallow water equation-based model REEF3D::SFLOW is applied for the numerical investigation of overtopping over a coastal structure. Validation is performed by comparing the numerical estimations with the existing experiment presented by previous studies. The time evolution of overtopping can be predicted well by the numerical model in comparison to the experimental data. The computational speed is seen to be approximately 1500 times as fast as the Navier–Stokes equation-based counterparts. Thereafter, a comprehensive study on overtopping that takes into account different climate scenarios is presented with regard to the chosen coastal structure; this offers insights for future adaptations. The numerical approach provides an efficient alternative for the coastal protection structure adaptations in the changing climate.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Numerical Investigation on Wave-Overtopping at a Double-Dike Defence Structure in Response to Climate Change-Induced Sea Level Rise

Jin

Wang

Kamath

et al. 2022

Fluids

View full text Add to dashboard Cite

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“…One of the hottest research fields among SPH practitioners is the study of wave interaction with shoreline structures (Rogers et al, 2010;Altomare et al, 2015;Ren et al, 2015, Akbari, 2017Mokos et al, 2020;Altomare et al, 2020). Most of these structures are considered fixed objects while employing flexible structures could improve their performance with significant reduction of the construction cost.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Solitary Wave Power Absorption by Rotating Slotted Flappers using Incompressible SPH Method

Heydari¹,

Shobeyri²

2023

Preprint

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In this study, the incompressible smoothed particle hydrodynamics (ISPH) as a mature enough mesh-less method is applied to simulate the oscillatory motion of different slotted rotating flappers at the end of a numerical tank under the hydrodynamic load of a solitary wave. The solitary wave can be considered a simple model of ocean waves with long-lasting source of eco-friendly and renewable energy. Many engineering devices such as rotating flappers have been proposed and designed to capture this energy. On the other hand, these structures can also be applied to withstand destructive waves for example Tsunami waves with huge potential to cause severe damage to coastal structures and loss of life in shore regions. This study investigates the performance of a number of 2-D rotating bottom-hinged flappers slotted with different patterns representing a new conceptual model of a wave energy absorber device capable of protecting coastal structures. With providing structural facilities, various slotting patterns can be arranged for a single flapper to have appropriate performance for different wave conditions with the lowest construction cost. Based on the obtained numerical results, it has been found that the spring stiffness of the flapper has the most important physical parameter determining the amount of wave power extraction. In addition to this, the spring friction also has a significant effect on the dissipation of the absorbed power. The slotted flappers also show different rotational motion with less captured power in comparison with the solid flapper. Several physical properties such as the slotted area provided in the flapper and the corresponding pattern, the spring stiffness and friction and other related properties must be determined to protect desired structures at the predefined level and capture maximum energy as much as possible. The findings of this research can be used as a preliminary guide to design more realistic 3-D protective flappers for complex flow conditions.

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