Numerical investigation of the effects of roughness, a berm and oblique waves on wave overtopping processes at dikes

Chen, W.; Warmink, Jord Jurriaan; Gent, Marcel R.A. van; Hulscher, Suzanne J.M.H.

doi:10.1016/j.apor.2021.102971

Cited by 14 publications

(6 citation statements)

References 23 publications

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“…Finite Element Method (FEM) has emerged as a valuable numerical tool for simulating complex fluid-structure interactions in coastal engineering (W. Chen et al, 2022). The method used in numerical calculations is the finite element method.…”

Section: Finite Element Methodsmentioning

confidence: 99%

“…One widely used software package for implementing FEM is COMSOL Multiphysics, which offers a flexible and versatile environment for simulating and analyzing complex Multiphysics problems. This article presents a finite element model developed using COMSOL software to investigate the effects of rock obstructions on wave overtopping at the coastline (van Gent et al, 2022). By utilizing COMSOL's capabilities, the model considers various factors such as wave characteristics, rock geometry, and coastal topography to simulate the wave-overtopping process accurately.…”

Section: Introductionmentioning

confidence: 99%

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Finite Element Model of Rock Obstruction on Overtopping at the Coastline

Marpaung,

Tulus,

Mardiningsih

2023

SinkrOn

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Wave overtopping is a common phenomenon that occurs during extreme sea conditions, where water waves travel over the surface of an open structure towards the sea and pass over its crest. To prevent flooding and coastal erosion, rock structures are often constructed as wave barriers along the shore. These barriers serve as a solution to mitigate wave overtopping. One of the key factors influencing overtopping is the arrival of continuous and sufficiently high-water waves that can pass through the top of coastal defense structures. Several phase settlement methods have been developed and applied to analyze wave overtopping using the Navier-Stokes (NS) equation. By employing the finite element method, numerical solutions and simulations are sought by inputting specific parameter values. This process aims to validate the accuracy of the resulting mathematical model. To accomplish this, a program is developed based on the discretization of the model, enabling a system analysis approach. The obtained results exhibit minimal error values, thereby demonstrating optimal outcomes in terms of rock placement. The entire fluid mechanics system analysis is simulated using the COMSOL Multiphysics 5.6 program, which provides a comprehensive platform for studying and evaluating the performance of the wave barrier system

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Section: Finite Element Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Finite Element Model of Rock Obstruction on Overtopping at the Coastline

Marpaung,

Tulus,

Mardiningsih

2023

SinkrOn

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Section: Wave Overtopping Dischargesmentioning

confidence: 99%

“…For the influence of berms on wave overtopping discharges ( b ) reference is made to Chen et al (2020aChen et al ( ,b, 2021Chen et al ( , 2022 and to Van Gent (2020) for dikes with a berm under oblique wave attack. For the influence of roughness ( f ) reference is made to TAW (2002), Capel (2015) and Chen et al (2020aChen et al ( ,b, 2021Chen et al ( , 2022 for dikes and to Bruce et al (2009) and Molines and Medina (2015) for rubble mound breakwaters. For the influence of crest walls ( v ) reference is made to Van Doorslaer (2018) for crest elements on dikes and to Van Gent et al (2022) and Irías Mata and Van Gent (2023) for crest elements on rubble mound breakwaters.…”

Section: Wave Overtopping Dischargesmentioning

confidence: 99%

Wave Overtopping at Dikes and Breakwaters Under Oblique Wave Attack

Gent

2023

Int. Conf. Coastal. Eng.

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The crest level of coastal structures such as dikes and breakwaters is often based on estimates of the amount of wave overtopping. One of the important parameters affecting wave overtopping is the angle of the incident waves since oblique waves can significantly reduce the amount of wave overtopping compared to perpendicular wave attack. Based on 3D physical model tests on dikes, rubble mound breakwaters and vertical caisson breakwaters, the influence of oblique wave attack has been evaluated. A new expression for oblique waves has been derived that can be applied for all tested structure types.

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“…Next to the limitations of these empirical formulas, the volume distribution is generated using empirical formulations in the EurOtop Manual (2018) that have a substantial uncertainty. The distribution of overtopping volumes depends not only on the hydraulic conditions, but also on the geometry and the roughness of the water side slope (Chen et al, 2020), the angle of wave attack (Lara et al, 2012;Van Gent, 2021;Chen et al, 2021b) and currents (EurOtop Manual, 2018) (Figure 7.1). These effects are all included using influence factors in the EurOtop Manual (2018), but these influence factors include some uncertainty and combinations of influence factors are not always known.…”

Section: Flow Velocity and Layer Thickness On The Crestmentioning

confidence: 99%

Over the dike top: modelling the hydraulic load of overtopping waves including transitions for dike cover erosion

Bergeijk¹

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Samenvatting 1 Introduction 2 An analytical model of wave overtopping flow velocities on dike crests and landward slopes 3 Modelling the wave overtopping flow over the crest and the landward slope of grass-covered flood defences. 4 The wave overtopping load on landward slopes of grasscovered flood defences: deriving practical formulations using a numerical model. 5 The effects of transitions in cover type and height on the wave overtopping load on grass-covered flood defences 6 The cross-dike failure probability by wave overtopping over grass-covered and damaged dikes 7 Discussion 8 Conclusions and recommendations List of References

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Numerical investigation of the effects of roughness, a berm and oblique waves on wave overtopping processes at dikes

Cited by 14 publications

References 23 publications

Finite Element Model of Rock Obstruction on Overtopping at the Coastline

Finite Element Model of Rock Obstruction on Overtopping at the Coastline

Wave Overtopping at Dikes and Breakwaters Under Oblique Wave Attack

Over the dike top: modelling the hydraulic load of overtopping waves including transitions for dike cover erosion

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