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Journal articles on the topic 'Overtopping volume'

Author: Grafiati

Published: 26 June 2021

Last updated: 29 July 2025

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1

Gu, Jiayue, Xin Hu, Shuguang Liu, and Quanhe Ju. "INFLUENCE OF CROWN-WALL ON WAVE OVERTOPPING PROBABILITY AND PROBABILITY DISTRIBUTION OVER A SEAWALL." Coastal Engineering Proceedings, no. 36 (December 30, 2018): 70. http://dx.doi.org/10.9753/icce.v36.structures.70.

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In the past decades, the crest height of the seawall was determined by the allowable average wave overtopping rate q. Franco (1994) concluded that individual wave overtoppingï¼Œparticularly the maximum individual volume, provided a better design method than q, considering the stability of the seawall and the safety of vehicles and people along the coastal area protected by the coastal defense structures. Shanghai, located on the west bank of the Pacific Ocean, is quite sensitive to the risk of storm surges and violent wave overtopping. The crown-wall serves as an engineering measure to reduce

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Spek, Bart-Jan van der, Eelco Bijl, Jentsje van der Meer, Maximilian Streicher, Peter Troch, and Pierre-Yves Guillermin. "WAVE OVERTOPPING CHARACTERISTICS FOR A DOUBLE VERTICAL WALL AND THE EFFECT OF PARAPETS." Coastal Engineering Proceedings, no. 37 (September 1, 2023): 34. http://dx.doi.org/10.9753/icce.v37.papers.34.

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The mean wave overtopping discharge and extreme overtopping volumes were assessed for a double vertical wall solution, including the combined effect of the mutual distance and effect of parapets, also known as wave return walls or bullnoses. New empirical functions were derived for predicting the mean overtopping discharge and maximum overtopping volumes applicable for this design case. This study demonstrates the importance of analyzing the statistical characteristics of extreme overtopping volumes, especially for cases with low number of overtopping waves and steep volume distributions. It i

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3

Van der Meer, Jentsje Wouter, Bianca Hardeman, Gosse Jan Steendam, Holger Schuttrumpf, and Henk Verheij. "FLOW DEPTHS AND VELOCITIES AT CREST AND LANDWARD SLOPE OF A DIKE, IN THEORY AND WITH THE WAVE OVERTOPPING SIMULATOR." Coastal Engineering Proceedings 1, no. 32 (2011): 10. http://dx.doi.org/10.9753/icce.v32.structures.10.

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Wave overtopping discharges at coastal structures are well described in the EurOtop Manual (2007), including the distribution of overtopping wave volumes. Each volume that overtops a dike or levee will have a certain flow velocity and depth record in time, often given by the maximum velocity and flow depth. This paper describes some further development of the theory on flow depth and velocities on the crest, but will also show an inconsistency with respect to the mass balance. The second part of the paper gives an analysis of measured values on real dikes, simulated by the Wave Overtopping Sim

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4

Altomare, Corrado, Xavi Gironella, Tomohiro Suzuki, Toon Verwaest, Mauro Campagnola, and Alessandra Saponieri. "OVERTOPPING FLOWS AND RELATED HAZARDS: A CASE OF STUDY FROM THE CATALAN COAST." Coastal Engineering Proceedings, no. 36v (December 28, 2020): 10. http://dx.doi.org/10.9753/icce.v36v.structures.10.

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Design criteria for coastal defenses exposed to wave overtopping are usually restricted to the assessment of mean discharges and maximum individual overtopping volumes, however it is not possible to give unambiguous or precise limits to tolerable overtopping for all kind of layouts (EurOtop, 2018). A few studies (e.g. Endoh and Takahashi, 1994) analyzed the relationship between wave overtopping flows and hazard levels for people at the crest of sea dikes. Sandoval (2016) confirmed that one single value of admissible mean discharge or individual overtopping volume is not a sufficient indicator

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Altomare, Corrado, Xavi Gironella, Tomohiro Suzuki, Giacomo Viccione, and Alessandra Saponieri. "Overtopping Metrics and Coastal Safety: A Case of Study from the Catalan Coast." Journal of Marine Science and Engineering 8, no. 8 (2020): 556. http://dx.doi.org/10.3390/jmse8080556.

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Design criteria for coastal defenses exposed to wave overtopping are usually assessed by mean overtopping discharges and maximum individual overtopping volumes. However, it is often difficult to give clear and precise limits of tolerable overtopping for all kinds of layouts. A few studies analyzed the relationship between wave overtopping flows and hazard levels for people on sea dikes, confirming that one single value of admissible mean discharge or individual overtopping volume is not a sufficient indicator of the hazard, but detailed characterization of flow velocities and depths is require

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Tessema, Netsanet Nigatu, Fjóla G. Sigtryggsdóttir, Leif Lia, and Asie Kemal Jabir. "Case Study of Dam Overtopping from Waves Generated by Landslides Impinging Perpendicular to a Reservoir’s Longitudinal Axis." Journal of Marine Science and Engineering 7, no. 7 (2019): 221. http://dx.doi.org/10.3390/jmse7070221.

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Landslide-generated impulse waves in dammed reservoirs run up the reservoir banks as well as the upstream dam slope. If large enough, the waves may overtop and even breach the dam and cause flooding of the downstream area with hazardous consequences. Hence, for reservoirs in landslide-prone areas, it is important to provide a means to estimate the potential size of an event triggered by landslides along the reservoir banks. This research deals with landslide-generated waves and the overtopping process over the dam crest in a three-dimensional (3D) physical model test, presenting a case study.

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Pepi, Yuri, Maximilian Streicher, Leopoldo Franco, Giorgio Bellotti, Steven Hughes, and Peter Troch. "TIME-DEPENDENT ANALYSIS OF WAVE OVERTOPPING: DISTRIBUTION OF INDIVIDUAL VOLUMES IN VARIABLE WATER LEVELS." Coastal Engineering Proceedings, no. 38 (May 29, 2025): 114. https://doi.org/10.9753/icce.v38.structures.114.

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The rising probability of extreme wave and storm surge events poses ever greater risks to coastal structures and populations (Toimil et al., 2020). Central to the assessment of function ability of these coastal structures and cost-effectiveness in their construction is the wave overtopping. In this context, two aspects of wave overtopping are distinguished: the average wave overtopping discharge and the individual wave overtopping volume. Understanding both aspects are essential for a proper safety assessment. Recent studies emphasize the need to delve deeper into these aspects, especially by

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8

Cole, E. C., M. Newton, and A. Youngblood. "Effects of overtopping on growth of white spruce in Alaska." Canadian Journal of Forest Research 43, no. 9 (2013): 861–71. http://dx.doi.org/10.1139/cjfr-2013-0117.

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Early establishment of competing vegetation often presents an obstacle to the success of planted white spruce (Picea glauca (Moench) Voss) seedlings. We followed growth and development of white spruce and associated vegetation for up to 17 years in Alaska’s boreal forests to quantify roles of overtopping plant cover in suppressing conifers. The three study areas represented a range of site conditions of varying productivity and species of competing cover, different site preparation and release treatments, and different bare-root and container white spruce stock types. Herbaceous overtopping pe

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9

Tessema, Netsanet, Fjóla Sigtryggsdóttir, Leif Lia, and Asie Jabir. "Physical Model Study on Discharge over a Dam Due to Landslide Generated Waves." Water 12, no. 1 (2020): 234. http://dx.doi.org/10.3390/w12010234.

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Impulse waves generated by landslides falling into reservoirs may lead to overtopping of a dam and, in turn, to flooding of the downstream area. In the case of an embankment dam, the overtopping may lead to erosion of the downstream slope, ultimately resulting in breaching and complete failure with consequent further hazardous release of water to the downstream area. This research deals with the overtopping process of a dam due to landslide generated waves in a three-dimensional (3D) physical scale model setup. Experiments have been conducted with varying the slide, reservoir, and dam paramete

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Lima, Márcia, Carlos Coelho, and Filipa Jesus. "Wave Overtopping and Flooding Costs in the Pre-Design of Longitudinal Revetments." Water 15, no. 7 (2023): 1434. http://dx.doi.org/10.3390/w15071434.

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Wave overtopping, mainly caused by growing coastal erosion processes, directly affects populations, causing coastal flooding and potential damages. This work aims to develop the relationship between overtopping phenomena and their impact costs through an approach that considers wave runup, corresponding overtopping events, their flow volume and related flooding costs. Herewith, it is possible to evaluate the relationship between the structure construction and maintenance costs and the consequent costs due to overtopping and flooding damages, leading to the design of optimised coastal structure

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Risio, Marcello Di, Daniele Celli, Carmine Di Nucci, and Davide Pasquali. "A SIMPLE METHOD TO MEASURE INSTANTANEOUS WAVE OVERTOPPING." Coastal Engineering Proceedings, no. 38 (May 29, 2025): 125. https://doi.org/10.9753/icce.v38.structures.125.

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Wave overtopping is one of the main phenomena influencing the performance of harbor structures in protecting the sheltered area (EurOtop, 2018). Indeed, the configuration of such a kind of structure is often selected to limit the wave overtopping that could threaten the safety of activities performed in harbors (Buccino et al., 2023). Usually, the wave overtopping is quantified by referring to the mean overtopping rate, the individual wave overtopping volume, and the thickness and velocity of the overtopping jet (e.g. Schüttrumpf et al. 2002; Mares-Nasarre et al., 2019; Altomare et al., 2020).

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Lee, Jong-In. "Experimental Study for Wave Overtopping Volume Estimation of Rubble-Mound Structure Using Pressure-Current Speed Relationship." Journal of Korean Society of Coastal and Ocean Engineers 36, no. 5 (2024): 208–16. http://dx.doi.org/10.9765/kscoe.2024.36.5.208.

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In this study, a new method for wave overtopping measurement was proposed. The proposed method utilize the pressure-current speed relationship and the wave overtopping height. The relationship between pressure and current speed was studied using a flow channel, and the validity of the method for measuring wave overtopping was examined using a two-dimensional wave flume. After installing a pressure gauge in the current channel, the change in pressure according to the increase in current speed was measured, and the relationship between pressure and current speed was derived. The proposed method

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13

Hubner, Ricardo G., Cristiano Fragassa, Maycon da S. Paiva, et al. "Numerical Analysis of an Overtopping Wave Energy Converter Subjected to the Incidence of Irregular and Regular Waves from Realistic Sea States." Journal of Marine Science and Engineering 10, no. 8 (2022): 1084. http://dx.doi.org/10.3390/jmse10081084.

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The present study aims to evaluate the difference in the fluid-dynamic behavior of an overtopping wave energy converter under the incidence of irregular waves based on a realistic sea state when compared to the incidence of regular waves, representative of this sea state. Thus, the sea data of three regions from the Rio Grande do Sul coast, Brazil, were considered. Fluent software was employed for the computational modeling, which is based on the finite volume method (FVM). The numerical generation of waves occurred through the imposition of the velocity boundary conditions using transient dis

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14

HOGG, ANDREW J., TOM E. BALDOCK, and DAVID PRITCHARD. "Overtopping a truncated planar beach." Journal of Fluid Mechanics 666 (November 16, 2010): 521–53. http://dx.doi.org/10.1017/s0022112010004325.

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Run-up on a truncated impermeable beach is analysed theoretically and experimentally to find the volume of fluid, associated with a single wave event, that flows over the end of the beach. The theoretical calculations investigate the motion using the shallow-water equations and the fluid is allowed to flow freely over the end of the beach. Two models of wave events are considered: dam-break initial conditions, in which fluid collapses from rest to run-up and overtop the beach, and a waveform that models swash associated with the collapse of a long solitary bore. The calculations are made using

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15

Llana, Alberto, Rafael Molina, Alberto Camarero, Alvaro Campos, Ana Francisca Alises, and José Damián López. "OVERTOPPING FLOW PROPERTIES CHARACTERIZATION IN LABORATORY AND PROTOTYPE THROUGH THE COMBINATION OF NON INTRUSIVE INSTRUMENTAL TECHNIQUES." Coastal Engineering Proceedings 1, no. 33 (2012): 46. http://dx.doi.org/10.9753/icce.v33.currents.46.

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Overtopping events may cause different failure modes depending on overtopped flow characteristics. Most of the studies about overtopping hazard analysis link the damages caused by the overtopping event to its mean overtopping discharge (q), which provides no information about overtopped flow characteristics or its spatial distribution. In this paper it is presented a non intrusive measurement system based on video imagery techniques and optical level sensors (OLS), which aim is to obtain overtopped highly aerated flows´ principal characteristics: velocity, volume, and density, in order to deep

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16

Baldock, T. E., D. Peiris, and A. J. Hogg. "Overtopping of solitary waves and solitary bores on a plane beach." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 468, no. 2147 (2012): 3494–516. http://dx.doi.org/10.1098/rspa.2011.0729.

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The overtopping of solitary waves and bores present major hazards during the initial phase of tsunami inundation and storm surges. This paper presents new laboratory data on overtopping events by both solitary waves and solitary bores. Existing empirical overtopping scaling laws are found to be deficient for these wave forms. Two distinct scaling regimes are instead identified. For solitary waves, the overtopping rates scale linearly with the deficit in run-up freeboard. The volume flux in the incident solitary wave is also an important parameter, and a weak dependence on the nonlinearity of t

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Iuppa, Claudio, Luca Cavallaro, Rosaria Ester Musumeci, Diego Vicinanza, and Enrico Foti. "Empirical overtopping volume statistics at an OBREC." Coastal Engineering 152 (October 2019): 103524. http://dx.doi.org/10.1016/j.coastaleng.2019.103524.

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Yasuda, Tomohiro, Kenta Matsuki, Yurika Koda, Testuya Hiraishi, and Nobuhito Mori. "EFFECT OF WATER LEVEL CHANGE ON WAVE OVERTOPPING VOLUME BASED ON EXPERIMENT SIMULTANEOUS OCCURRENCE OF STORM SURGES AND WAVES." Coastal Engineering Proceedings, no. 38 (May 29, 2025): 46. https://doi.org/10.9753/icce.v38.structures.46.

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Typhoon Jebi hit Osaka Bay, Japan in 2018, causing significant damage to coastal areas due to storm surges and high waves. Although the water level due to the storm surge was lower than the seawalls, the super-imposed storm surge caused inundation damage in some areas in the hinterland, such as Kansai Airport due to wave overtopping. Inundation damage in inner bay areas was enhanced by the simultaneous occurrence of storm surges and high waves. Therefore, it is necessary to reexamine the transition state of water level rise caused by storm surges and the effects of the simultaneous occurrence

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Vanneste, Dieter, Marc Willems, Sieglien De Roo, Tomohiro Suzuki, Maximilian Streicher, and Peter Troch. "WAVE OVERTOPPING OVER A SEA DIKE WITH STILLING WAVE BASIN AND SHALLOW FORESHORE." Coastal Engineering Proceedings, no. 38 (May 29, 2025): 8. https://doi.org/10.9753/icce.v38.structures.8.

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In the past decade, sea dikes were renovated at different locations along the Belgian coast using the concept of a stilling wave basin. Although different in geometrical details, all sea dikes use the same concept: (i) the impact of the incoming waves is reduced by the first seaward wall; (ii) overtopping waves are reflected by the second landward wall, positioned at a certain distance of the first wall on the dike’s crest and (iii) the overtopped volume is flowing back through voids in the seaward wall. In this way, overtopping discharges can be kept to tolerable limits whilst maintaining the

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20

Requena, A. I., L. Mediero, and L. Garrote. "A bivariate return period based on copulas for hydrologic dam design: accounting for reservoir routing in risk estimation." Hydrology and Earth System Sciences 17, no. 8 (2013): 3023–38. http://dx.doi.org/10.5194/hess-17-3023-2013.

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Abstract. A multivariate analysis on flood variables is needed to design some hydraulic structures like dams, as the complexity of the routing process in a reservoir requires a representation of the full hydrograph. In this work, a bivariate copula model was used to obtain the bivariate joint distribution of flood peak and volume, in order to know the probability of occurrence of a given inflow hydrograph. However, the risk of dam overtopping is given by the maximum water elevation reached during the routing process, which depends on the hydrograph variables, the reservoir volume and the spill

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de Barros, Andréia S., Cristiano Fragassa, Maycon da S. Paiva, et al. "Numerical Study and Geometrical Investigation of an Onshore Overtopping Device Wave Energy Converter with a Seabed Coupled Structure." Journal of Marine Science and Engineering 11, no. 2 (2023): 412. http://dx.doi.org/10.3390/jmse11020412.

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Studies regarding renewable energy sources have gained attention over recent years. One example is wave energy converters, which harvest energy from sea waves using different operational principles such as oscillating water columns, oscillating bodies, and overtopping devices. In the present paper, a numerical study is carried out, and a geometrical investigation of a full-scale overtopping device with a coupled structure mounted on the seabed is performed using the Constructal Design method. The main purpose is to investigate the influence of the design over the available power of the device.

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van Bergeijk, Vera M., Jord J. Warmink, and Suzanne J. M. H. Hulscher. "Modelling the Wave Overtopping Flow over the Crest and the Landward Slope of Grass-Covered Flood Defences." Journal of Marine Science and Engineering 8, no. 7 (2020): 489. http://dx.doi.org/10.3390/jmse8070489.

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The wave overtopping flow can exert high hydraulic loads on the grass cover of dikes leading to failure of the cover layer on the crest and the landward slope. Hydraulic variables such as the near bed velocity, pressure, shear stress and normal stress are important to describe the forces that may lead to cover erosion. This paper presents a numerical model in the open source software OpenFOAM® to simulate the overtopping flow on the grass-covered crest and slope of individual overtopping waves for a range of landward slope angles. The model provides insights on how the hydraulic forces change

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Martins, Jaifer Corrêa, Cristiano Fragassa, Marcelo Moraes Goulart, et al. "Constructal Design of an Overtopping Wave Energy Converter Incorporated in a Breakwater." Journal of Marine Science and Engineering 10, no. 4 (2022): 471. http://dx.doi.org/10.3390/jmse10040471.

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A numerical study was performed in the present work about an Overtopping Device Wave Energy Converter (OTD-WEC) with one and two ramps incorporated in a real breakwater. The Constructal Design method was applied to evaluate the effects on the average dimensionless overtopping flow of the degrees of freedom of the device with one and two ramps. In addition, a comparison was carried out among the different geometry configurations of the OTD-WEC to determine which one presents the best hydrodynamic performance. The work used the JONSWAP spectrum and the multiphase Volume of Fluid model. It also s

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Hu, Jielong, Songgui Chen, Hanbao Chen, Zhichao Nie, Zuoda Qi, and Zihao Duan. "Dynamic Response Study of Coral Reef Revetment Project Under Extreme Wave Action." Sustainability 16, no. 22 (2024): 9939. http://dx.doi.org/10.3390/su16229939.

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It is crucial for reef revetments to respond dynamically to rigorous wave actions for structural stability and safety. A comprehensive analysis of the interaction between the wave force and wave overtopping in a reef revetment project was conducted based on wave flume experiments. This study explored how wave conditions, the water depth along the reef flat, and the proximity of the reef edge to the revetment project influenced wave overtopping and wave force patterns. The results indicate that as the incident wave height, period, and water depth along the reef flat increased, the average wave

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Paape, A. "EXPERIMENTAL DATA ON THE OVERTOPPING OF SEAWALLS BY WAVES." Coastal Engineering Proceedings 1, no. 7 (2011): 36. http://dx.doi.org/10.9753/icce.v7.36.

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In the past it has been found that serious damage and breaching of seawalls is most frequently caused by overtopping. Hence for the design of seawalls data must be available about the overtopping by waves of the different profiles that might be possible. Naturally the conditions under which damage is caused to the seawall also depend on the type of construction and the materials used, for example: the stability of grass covered dikes can be endangered seriously by water flowing over the inner slope. In many designs the necessary height of a seawall has been defined such that not more than 2% o

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Liu, Nian, Md Salauddin, Abbas Yeganeh-Bakhtiari, Jonathan Pearson, and Soroush Abolfathi. "The Impact of Eco-retrofitting on Coastal Resilience Enhancement – A Physical Modelling Study." IOP Conference Series: Earth and Environmental Science 1072, no. 1 (2022): 012005. http://dx.doi.org/10.1088/1755-1315/1072/1/012005.

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Abstract Recent climate change studies highlight that the sea-level rise and increase in intensity and frequency of extreme climatic events and storm surges will result in catastrophic wave overtopping events from coastal defences. Retrofitting of the existing seawalls provides great potentials for enhancement of the climatic resilience in coastal region through overtopping attenuation. With increasing attention towards sustainable and low emission solutions for improving the resilience of critical infrastructures to natural hazards, providing coastal protection service is no longer the only c

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Steendam, Gosse Jan, Jentsje Wouter Van der Meer, Andre Van Hoven, and Astrid Labrujere. "WAVE RUN-UP SIMULATIONS ON REAL DIKES." Coastal Engineering Proceedings, no. 35 (June 23, 2017): 42. http://dx.doi.org/10.9753/icce.v35.structures.42.

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A new Wave Run-up Simulator has been designed, constructed, calibrated and used for testing of the seaward face of dikes. The upper part of dikes or levees often have a clay layer with a grass cover. The new device is able to test the strength of the grass cover under simulation of up-rushing waves for pre-defined storm conditions. The cumulative overload method has been developed to describe the strength of grass covers on the crest and landward side of dikes, for overtopping wave volumes. In essence there is not a lot of difference between the hydraulic load from an overtopping wave volume o

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Barbosa, D. V. E., J. A. Souza, E. D. dos Santos, L. A. Isoldi, and J. C. Martins. "NUMERICAL ANALYSES OF OPENFOAM'S OVERTOPPING DEVICE SOLUTION." Revista de Engenharia Térmica 16, no. 1 (2017): 96. http://dx.doi.org/10.5380/reterm.v16i1.62198.

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Studies related to ocean energy are getting more important lately, once world claims for renewable energy usage. The Overtopping Device is a kind of Ocean Waves Energy Converter (OWEC), which main concept is storing water provided by incident waves above sea level to feed a set of low head turbines. In order to obtain the desired effect, this device contains a ramp which elevates the incident waves toward the reservoir. Present study aims to perform a numerical model of a 2D Overtopping Device by means of OpenFOAM simulations. OpenFOAM is a free open source code which has shown applicability i

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Martins, Jaifer Correa, Marcelo Moraes Goulart, Elizaldo Domingues dos Santos, Liércio André Isoldi, Mateus das Neves Gomes, and Luiz Alberto Oliveira Rocha. "Constructal Design of a Two Ramps Overtopping Wave Energy Converter Integrated into a Breakwater: Effect of the Vertical Distance between the Ramps over its Performance." Defect and Diffusion Forum 420 (November 14, 2022): 242–58. http://dx.doi.org/10.4028/p-408n90.

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A two-dimensional numerical study about the influence of a vertical distance between two ramps of an Overtopping Device Wave Energy Converter (OTD-WEC) integrated into a breakwater in the city of São José do Norte, Rio Grande do Sul, Brazil was analyzed. The main purpose was to evaluate the influence of the vertical distance between the two ramps (Hg) of OTD-WEC, on the average overtopping dimensionless flow () using the Constructal Design for the geometric evaluation defining: 1) degree of freedom, (Hg), and 2) constraints, horizontal distance between the ramps (Lg), ratio between the heigh

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Requena, A. I., L. Mediero, and L. Garrote. "Bivariate return period based on copulas for hydrologic dam design: comparison of theoretical and empirical approach." Hydrology and Earth System Sciences Discussions 10, no. 1 (2013): 557–96. http://dx.doi.org/10.5194/hessd-10-557-2013.

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Abstract. Hydrologic frequency analyses are usually focused on flood peaks. Multivariate analyses on flood variables have not been so exhaustively studied despite the fact that they are required to represent the full hydrograph, which is essential for designing some structures like dams. In this work, a bivariate copula model was used to obtain the bivariate joint distribution of flood peak and volume. An empirical bivariate return period was defined in terms of acceptable risk to the dam through the maximum water elevation reached during the routing process, in order to perform a risk assessm

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PEREGRINE, D. H., and S. M. WILLIAMS. "Swash overtopping a truncated plane beach." Journal of Fluid Mechanics 440 (August 10, 2001): 391–99. http://dx.doi.org/10.1017/s002211200100492x.

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Swash on a plane beach is modelled by using a solution of the shallow-water equations due to Shen & Meyer (1963). The equations are used in a form appropriate for a plane at a finite angle to the horizontal. The beach is cut-off at a level below that of the maximum run-up, and the water is taken to fall freely over the end of the beach. An explicit solution is found which permits evaluation of the overtopping flow and total volume for one swash event.

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Senturk, Baris Ufuk, Furkan Demir, Berkay Erler, et al. "CFD MODELING OF THE EFFECT OF ANTIFER UNITS USED IN THE ARMOR LAYER OF MOUND BREAKWATERS ON WAVE OVERTOPPING." Coastal Engineering Proceedings, no. 38 (May 29, 2025): 85. https://doi.org/10.9753/icce.v38.structures.85.

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Accurate prediction of wave overtopping is crucial for designing mound breakwaters. It is a common practice to use empirical equations (e.g. EurOtop, 2018) to determine wave overtopping discharges for practical purposes. On the other hand, with the help of the exponential increase in computer technology, the use of computational fluid dynamics (CFD) tools for wave overtopping is becoming widespread (e.g. Chen et al., 2021). In coastal engineering CFD applications, it is a common practice to model the mound breakwaters using a macro porous media modeling approach, where the overall flow behavio

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TANAKA, Hiromichi, Tomoya INAMI, and Tetsuo SAKURADA. "Characteristics of Volume of Overtopping and Water Supply Quantity for Developing Wave Overtopping Type Wave Power Generation Equipment." Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 70, no. 2 (2014): I_1301—I_1305. http://dx.doi.org/10.2208/kaigan.70.i_1301.

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dos Santos, Elizaldo Domingues, Bianca Neves Machado, Marcos Moisés Zanella, et al. "Numerical Study of the Effect of the Relative Depth on the Overtopping Wave Energy Converters According to Constructal Design." Defect and Diffusion Forum 348 (January 2014): 232–44. http://dx.doi.org/10.4028/www.scientific.net/ddf.348.232.

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The conversion of wave energy in electrical one has been increasingly studied. One example of wave energy converter (WEC) is the overtopping device. Its main operational principle consists of a ramp which guides the incoming waves into a reservoir raised slightly above the sea level. The accumulated water in the reservoir flows through a low head turbine generating electricity. In this sense, it is performed a numerical study concerned with the geometric optimization of an overtopping WEC for various relative depths:d/λ = 0.3, 0.5 and 0.62, by means of Constructal Design. The main purpose is t

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Gaeta, Maria Gabriella, Massimo Guerrero, Sara Mizar Formentin, Giuseppina Palma, and Barbara Zanuttigh. "Non-Intrusive Measurements of Wave-Induced Flow over Dikes by Means of a Combined Ultrasound Doppler Velocimetry and Videography." Water 12, no. 11 (2020): 3053. http://dx.doi.org/10.3390/w12113053.

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The performance of non-intrusive instruments, such as acoustic profilers and cameras, to describe the wave-induced flow processes over maritime dike crest was investigated in experiments carried out at the University of Bologna. Direct and derived measurements from the acoustic probes deployed along the structure crest were discussed in relation to the observed backscatter rates. Image processing was implemented by means of clustering algorithm, in order to detect the free surface during overtopping events and characterize wave front propagation over the dike crest. UVP data were processed to

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Zhao, Enjin, Lin Mu, Zhaoyang Hu, Xinqiang Wang, Junkai Sun, and Zhiyong Zhang. "Physical and Numerical Investigations on Wave Run-Up and Dissipation under Breakwater with Fence Revetment." Journal of Marine Science and Engineering 9, no. 12 (2021): 1355. http://dx.doi.org/10.3390/jmse9121355.

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Revetment elements and protective facilities on a breakwater can effectively weaken the impact of waves. In order to resist storm surges, there is a plan to build a breakwater on the northern shore of Meizhou Bay in Putian City, China. To better design it, considering different environmental conditions, physical and numerical experiments were carried out to accurately study the effects of the breakwater and its auxiliary structures on wave propagation. In the experiments, the influence of the wave type, initial water depth, and the structure of the fence plate are considered. The wave run-up a

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Li, Meng-Syue, Cheng-Jung Hsu, Hung-Chu Hsu, and Li-Hung Tsai. "Numerical Analysis of Vertical Breakwater Stability under Extreme Waves." Journal of Marine Science and Engineering 8, no. 12 (2020): 986. http://dx.doi.org/10.3390/jmse8120986.

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The purpose of this study is to perform a numerical simulation of caisson breakwater stability concerning the effect of wave overtopping under extreme waves. A numerical model, which solves two-dimensional Reynolds-averaged Navier–Stokes equations with the k−ε turbulence closure and uses the volume of fluid method for surface capturing, is validated with the laboratory observations. The numerical model is shown to accurately predict the measured free-surface profiles and the wave pressures around a caisson breakwater. Considering the dynamic loading on caisson breakwaters during overtopping wa

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Son, Namjeong, Yoojin Kim, Mimi Min, Seungho Jung, and Chankyu Kang. "Numerical Investigation of Overtopping Prevention for Optimal Safety Dike Design." International Journal of Environmental Research and Public Health 19, no. 24 (2022): 16429. http://dx.doi.org/10.3390/ijerph192416429.

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Leakage accidents at chemical facilities have a negative impact on both the environment and human life, and the government has established and implemented regulations on dikes in order to minimize such accidents. However, the overtopping phenomenon in which chemicals overflow the dike due to catastrophic leakage requires additional safeguards. In this study, the mitigation effect was confirmed by simulating tanks and dikes using various deflector plates to minimize the effect of spilled chemicals. ANSYS Fluent 19.1, a computational fluid dynamics program, was used, and the overtopping effect w

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Hübner, R. G., P. H. Oleinik, W. C. Marques, et al. "NUMERICAL STUDY COMPARING THE INCIDENCE INFLUENCE BETWEEN REALISTIC WAVE AND REGULAR WAVE OVER AN OVERTOPPING DEVICE." Revista de Engenharia Térmica 18, no. 1 (2019): 46. http://dx.doi.org/10.5380/reterm.v18i1.67047.

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This work presents a numerical study to evaluate the difference between the fluid dynamic behavior of an overtopping device subjected to the incidence of a realistic wave when compared to a regular one; being this regular wave representative of the considered realistic sea state. To do so, the FLUENT software was employed, which is a Computational Fluid Dynamics package based on the Finite Volume Method. The regular wave was generated through a User Defined Function (UDF) that imposes its velocities components as boundary conditions of prescribed velocity. On the other hand, for the realistic

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Gomes, Mateus das Neves, Maria Fernanda Espinel Lara, Silvana Letícia Pires Iahnke, et al. "Numerical Approach of the Main Physical Operational Principle of Several Wave Energy Converters: Oscillating Water Column, Overtopping and Submerged Plate." Defect and Diffusion Forum 362 (April 2015): 115–71. http://dx.doi.org/10.4028/www.scientific.net/ddf.362.115.

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In this work it is numerically studied the wave flow inside a tank and the main operational physical principle of three different wave energy converters (WEC): oscillating water column (OWC), overtopping and submerged plate. The wave energy converters are evaluated in laboratory and real scales. For all studied cases the conservation equations of mass, momentum and one equation for the transport of volumetric fraction are solved with the finite volume method (FVM). To tackle with water-air mixture, the multiphase model Volume of Fluid (VOF) is used. Several results showed the accuracy of the n

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KOMATSU, Toshimitsu, Nobuhiro MATSUNAGA, Misao HASHIDA, Tomonari OKADA, and Kazuo FUJITA. "Volume of Wave Overtopping Gained Effectively by a 3-D Structure." PROCEEDINGS OF HYDRAULIC ENGINEERING 38 (1994): 493–97. http://dx.doi.org/10.2208/prohe.38.493.

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42

Lashley, Christopher H., Sebastiaan N. Jonkman, Jentsje van der Meer, Jeremy D. Bricker, and Vincent Vuik. "The influence of infragravity waves on the safety of coastal defences: a case study of the Dutch Wadden Sea." Natural Hazards and Earth System Sciences 22, no. 1 (2022): 1–22. http://dx.doi.org/10.5194/nhess-22-1-2022.

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Abstract. Many coastlines around the world are protected by dikes with shallow foreshores (e.g. salt marshes and mudflats) that attenuate storm waves and are expected to reduce the likelihood and volume of waves overtopping the dikes behind them. However, most of the studies to date that assessed their effectiveness have excluded the influence of infragravity (IG) waves, which often dominate in shallow water. Here, we propose a modular and adaptable framework to estimate the probability of coastal dike failure by overtopping waves (Pf). The influence of IG waves on overtopping is included usin

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Hosseinzadeh-Tabrizi, Seyed Alireza, and Mahnaz Ghaeini-Hessaroeyeh. "Application of Bed Load Formulations for Dam Failure and Overtopping." Civil Engineering Journal 3, no. 10 (2017): 997. http://dx.doi.org/10.28991/cej-030932.

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The Enhanced HLLC scheme as a robust approximate Riemann solver is used for numerical modeling of three different test cases of mobile bed and stepped mobile bed in dam failure and dam overtopping conditions. The current research has been done in the frame of the finite volume method using shallow water equations along with the Exner equation for sediment continuity. The Ribberink, Wong and Parker formulations have been used for the modelling of bed load movement. A convenient approach based on the Boussinesq hypothesis is deployed for considering turbulence effects in the second case. The aff

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Guan, Dawei, Jingang Liu, Yee-Meng Chiew, and Yingzheng Zhou. "Scour Evolution Downstream of Submerged Weirs in Clear Water Scour Conditions." Water 11, no. 9 (2019): 1746. http://dx.doi.org/10.3390/w11091746.

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Although weirs or dikes in the riverine and coastal environments are frequently overtopped, few studies have hitherto examined the evolution of the scour process downstream of these structures under the submerged condition. This paper presents an experimental investigation on time evolution of the scour process downstream of submerged weirs with a uniform coarse sand. The clear-water scour experiments were carried out in a tilting recirculation flume. Different flow intensities and overtopping ratios (approach flow depth/weir height) were adopted in the experiments. Experimental observations s

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Cisco, Lenon A., Rafael P. Maciel, Phelype H. Oleinik, et al. "Numerical Analysis of the Available Power in an Overtopping Wave Energy Converter Subjected to a Sea State of the Coastal Region of Tramandaí, Brazil." Fluids 7, no. 11 (2022): 359. http://dx.doi.org/10.3390/fluids7110359.

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The present work proposes a numerical study of an overtopping wave energy converter. The goal of this study is to evaluate the theoretical power that can be converted by an overtopping device subjected to sea waves in the coastal region of Tramandaí, Brazil. For this, realistic irregular waves were generated using the WaveMIMO methodology, which allows numerical simulation of sea waves through the imposition of transient discrete data as prescribed velocity. For the numerical analysis, a two-dimensional computational model was employed using Fluent, where the device was inserted into a wave ch

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Didier, E., D. R. C. B. Neves, R. Martins, and M. G. Neves. "MODELLING OF HYDRODYNAMICS AROUND AN IMPERMEABLE BREAKWATER: COMPARISON BETWEEN PHYSICAL AND SPH NUMERICAL MODELING." Revista de Engenharia Térmica 11, no. 1-2 (2012): 68. http://dx.doi.org/10.5380/reterm.v11i1-2.62003.

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This work presents the new developments and the validation of a Smoothed Particle Hydrodynamics (SPH) numerical model used in the National Laboratory of Civil Engineering (Laboratório Nacional de Engenharia Civil - LNEC) for studies in coastal engineering processes. Although the model requires a high CPU time, it proved to be very promising in the simulation of complex flows, such as the wave-structure interaction and the wave breaking phenomenon. For the SPH model validation, physical modeling tests were performed in one LNEC’s flume to study the interaction between an impermeable structure a

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Lee, Cheol-Eung. "Reliability Analysis of Maximum Overtopping Volume for Evaluating Freeboard of Vertical Breakwaters." Journal of Korean Society of Coastal and Ocean Engineers 23, no. 2 (2011): 154–62. http://dx.doi.org/10.9765/kscoe.2011.23.2.154.

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48

Hughes, Steven A., and Christopher I. Thornton. "Estimation of time-varying discharge and cumulative volume in individual overtopping waves." Coastal Engineering 117 (November 2016): 191–204. http://dx.doi.org/10.1016/j.coastaleng.2016.08.006.

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Nicolae Lerma, Alexandre, Thomas Bulteau, Sylvain Elineau, et al. "High-resolution marine flood modelling coupling overflow and overtopping processes: framing the hazard based on historical and statistical approaches." Natural Hazards and Earth System Sciences 18, no. 1 (2018): 207–29. http://dx.doi.org/10.5194/nhess-18-207-2018.

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Abstract. A modelling chain was implemented in order to propose a realistic appraisal of the risk in coastal areas affected by overflowing as well as overtopping processes. Simulations are performed through a nested downscaling strategy from regional to local scale at high spatial resolution with explicit buildings, urban structures such as sea front walls and hydraulic structures liable to affect the propagation of water in urban areas. Validation of the model performance is based on hard and soft available data analysis and conversion of qualitative to quantitative information to reconstruct

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Michailidi, Eleni Maria, and Baldassare Bacchi. "Dealing with uncertainty in the probability of overtopping of a flood mitigation dam." Hydrology and Earth System Sciences 21, no. 5 (2017): 2497–507. http://dx.doi.org/10.5194/hess-21-2497-2017.

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Abstract. In recent years, copula multivariate functions were used to model, probabilistically, the most important variables of flood events: discharge peak, flood volume and duration. However, in most of the cases, the sampling uncertainty, from which small-sized samples suffer, is neglected. In this paper, considering a real reservoir controlled by a dam as a case study, we apply a structure-based approach to estimate the probability of reaching specific reservoir levels, taking into account the key components of an event (flood peak, volume, hydrograph shape) and of the reservoir (rating cu

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