Beach response to wave energy converter farms acting as coastal defence

Mendoza, Edgar; Silva, Rodolfo; Zanuttigh, Barbara; Angelelli, Elisa; Andersen, Thomas Lykke; Martinelli, Luca; Nørgaard, Jørgen; Ruol, Piero

doi:10.1016/j.coastaleng.2013.10.018

Cited by 97 publications

(56 citation statements)

References 20 publications

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“…The results for wave height attenuation found downwave the WEC array can be further used for estimating the coastline evolution due to the presence of a WEC array, i.e., by applying traditional formulae predicting the long-shore sediment transport and erosion or accretion, based on wave height parameters, e.g., as performed by Mendoza et al in [32], and Nørgaard and Lykke Andersen in [33].…”

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confidence: 99%

Wave Basin Experiments with Large Wave Energy Converter Arrays to Study Interactions between the Converters and Effects on Other Users in the Sea and the Coastal Area

et al. 2014

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Abstract:Experiments have been performed in the Shallow Water Wave Basin of DHI (Hørsholm, Denmark), on large arrays of up to 25 heaving point absorber type Wave Energy Converters (WECs), for a range of geometric layout configurations and wave conditions. WEC response and modifications of the wave field are measured to provide OPEN ACCESSEnergies 2014, 7 702 data for understanding WEC array interactions and to evaluate array interaction numerical models. Each WEC consists of a buoy with a diameter of 0.315 m and power take-off (PTO) is modeled by realizing friction based energy dissipation through damping of the WEC's motion. Wave gauges are located within and around the WEC array. Wave conditions studied include regular, polychromatic, long-and short-crested irregular waves. A rectilinear arrangement of WEC support structures is employed such that several array configurations can be studied. In this paper, the experimental arrangement and the obtained database are presented. Also, results for wave height attenuation downwave a rectilinear array of 25 heaving WECs are presented, for the case of irregular waves. Up to 16.3% and 18.1% (long-crested) and 11.2% and 18.1% (short-crested waves) reduction in significant wave height is observed downwave the WEC array, for the radiated wave field only and for the combination of incident-diffracted-radiated (perturbed) wave field, respectively. Using spectra at different locations within and around the array, the wave field modifications are presented and discussed.

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confidence: 99%

Wave Basin Experiments with Large Wave Energy Converter Arrays to Study Interactions between the Converters and Effects on Other Users in the Sea and the Coastal Area

et al. 2014

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“…In addition, a shared location can reduce the operational and the maintenance costs. Furthermore, the marine farms can also have environmental benefits [37,38] by decelerating the erosion processes. Studies show that, in some cases, the down wave climate and especially the nearshore circulation patterns that control the beach dynamics can be significantly influenced by the presence of a marine energy park.…”

Section: Introductionmentioning

confidence: 99%

A Joint Evaluation of the Wind and Wave Energy Resources Close to the Greek Islands

et al. 2017

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Abstract:The objective of this work is to analyze the wind and wave energy potential in the proximity of the Greek islands. Thus, by evaluating the synergy between wind and waves, a more comprehensive picture of the renewable energy resources in the target area is provided. In this study, two different data sources are considered. The first data set is provided by the European Centre for Medium-Range Weather Forecasts (ECMWF) through the ERA-Interim project and covers an 11-year period, while the second data set is Archiving, Validation and Interpretation of Satellite Oceanographic data (AVISO) and covers six years of information. Using these data, parameters such as wind speed, significant wave height (SWH) and mean wave period (MWP) are analyzed. The following marine areas are targeted: Ionian Sea, Aegean Sea, Sea of Crete, Libyan Sea and Levantine Sea, near the coastal environment of the Greek islands. Initially, 26 reference points were considered. For a more detailed analysis, the number of reference points was narrowed down to 10 that were considered more relevant. Since in the island environments the resources are in general rather limited, the proposed work provides some outcomes concerning the wind and wave energy potential and the synergy between these two natural resources in the vicinity of the Greek islands. From the analysis performed, it can be noticed that the most energetic wind conditions are encountered west of Cios Island, followed by the regions east of Tinos and northeast of Crete. In these locations, the annual average values of the wind power density (Pwind) are in the range of 286-298.6 W/m 2 . Regarding the wave power density (Pwave), the most energetic locations can be found in the vicinity of Crete, north, south and southeast of the island. There, the wave energy potential is in the range of 2.88-2.99 kW/m.

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“…In addition to these measures, other anti-erosion and anti-flooding actions are available for both urbanized and natural coasts: managed realignment; urban planning; stabilization of river mouth (embankments to confine river discharge, plus bypass or sediment stock for updrift nourishment); lagoon dredging for environmental purposes; revetments (only where the unprotected area has no environmental and tourist interests); beach dewatering systems [60,61]; artificial reefs for habitat restoration; wave energy converter farms acting as coastal defence [62,63], seasonal interventions (e.g., sand accumulation, sand bags). It is also recommended that innovative solutions be lab-tested to ensure that they are effective in cost/benefit terms before they can be safely used on-site [16].…”

Section: Urbanized Low Sandy Coastsmentioning

confidence: 99%

Vulnerability Analysis of the Venetian Littoral and Adopted Mitigation Strategy

Ruol

Martinelli

Favaretto

2018

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This paper discusses the key aspects of the recent Coastal Plan of the Veneto Region (IT). Its aim is to propose a single mitigation strategy for coastal erosion that is valid for the whole Veneto Region, and possibly elsewhere, as well as a method to assign a priority level to any action. The suggested mitigation action against erosion depends on urbanization level, beach width, as well as cross-shore and long-shore sediment transport. The criterion used to give a priority level to mitigation actions is based on a vulnerability index that takes into account erosive tendency, existing coastal flooding hazards, coast value, environmental relevance, tourist pressure, urbanization level, the presence of production activities, and cultural heritage. A sample case featuring the littoral of Rosolina is also provided and includes a site description, the sediment budget, critical issues and possible mitigation measures.

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Beach response to wave energy converter farms acting as coastal defence

Cited by 97 publications

References 20 publications

Wave Basin Experiments with Large Wave Energy Converter Arrays to Study Interactions between the Converters and Effects on Other Users in the Sea and the Coastal Area

Wave Basin Experiments with Large Wave Energy Converter Arrays to Study Interactions between the Converters and Effects on Other Users in the Sea and the Coastal Area

A Joint Evaluation of the Wind and Wave Energy Resources Close to the Greek Islands

Vulnerability Analysis of the Venetian Littoral and Adopted Mitigation Strategy

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