Wave farm effects on the coast: The alongshore position

Rodríguez-Delgado, Cristóbal; Bergillos, Rafael J.; Ortega-Sánchez, Miguel; Iglesias, G.

doi:10.1016/j.scitotenv.2018.05.281

Cited by 43 publications

(9 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recent research on the impacts of a wave farm on the coastline has focused on the general layout of the farm [78] and its position alongshore [79]. There…”

Section: Discussionmentioning

confidence: 99%

“…The selected wave farm case studies have the same number of WECs (11) and rows (2), but different spacings between WECs: D, 2D, 3D, and 4D (Figure 3), with D = 90 m [58]. The geometrical centres of the defined case studies are all located at the same position (Figure 1), which was found to be optimum from the standpoint of the wave power available to the WECs [31]; whereas the selected number of WECs and layout have been proved to be adequate for coastal protection purposes in recent years [43,58,78,79].…”

Section: Definition Of the Case Studiesmentioning

confidence: 99%

See 1 more Smart Citation

Dual wave farms and coastline dynamics: The role of inter-device spacing

Rodríguez-Delgado

Bergillos

Iglesias

2019

Science of The Total Environment

Self Cite

View full text Add to dashboard Cite

In dual wave farms, i.e., arrays of wave energy converters (WECs) with a dual function - generation of renewable power and mitigation of coastal erosion - the spacing between the WECs is a fundamental design parameter. The present research has the objective of establishing how this parameter affects the shoreline evolution behind the array and, on this basis, to propose and apply a method to determine the optimum spacing for coastal protection. The method is demonstrated on a beach subjected to severe erosion. Five case studies are considered: four with different inter-WEC spacings, and one without the wave farm (baseline). A spectral wave propagation model is applied to analyse the variations in significant wave height behind the WEC array. Longshore sediment transport rates are calculated, and a shoreline model is applied. We find that in all the case studies the dry beach area is greater than in the baseline (no farm) case study, which proves the capacity of the dual WEC array to mitigate the erosive trends of the system. Importantly, we obtain that the inter-WEC spacing plays a fundamental role in the evolution of the shoreline and, consequently, in the effectiveness of the WEC array for coastal protection. The case studies with intermediate spacings yield the best performance in terms of dry beach area. More generally, the benefits of dual wave farms in terms of protection of coastal properties and infrastructure, and the ensuing savings in conventional coastal defence measures (coastal structures, beach nourishment, etc.) contribute to the development of wave energy by enhancing its economic viability. The methodology presented in this paper can be used to optimize the design of dual wave farms elsewhere.

show abstract

“…Recent research on the impacts of a wave farm on the coastline has focused on the general layout of the farm [78] and its position alongshore [79]. There…”

Section: Discussionmentioning

confidence: 99%

Section: Definition Of the Case Studiesmentioning

confidence: 99%

Dual wave farms and coastline dynamics: The role of inter-device spacing

Rodríguez-Delgado

Bergillos

Iglesias

2019

Science of The Total Environment

Self Cite

View full text Add to dashboard Cite

show abstract

“…This especially concerns the collocation of the wave farms in the vicinity of the future wind projects, so that to benefit from important cost reductions related to the grid connection and to the operational expenditures (OPEX). Furthermore, an important additional argument in favor of marine energy farms is that they may play a significant role in coastal protection [25][26][27]. At this point, it has to be highlighted that the western side of the Black Sea is currently subjected to high erosion processes that need very expensive periodical investments.…”

Section: Discussionmentioning

confidence: 99%

“…Many coastal areas in the Black Sea are subjected to high erosion processes and the future nearshore farms can play an important role in the coastal protection, because they extract (or dissipate) part of the wave energy before the waves arriving to the shore [19][20][21][22][23][24]. Furthermore, this is a general problem for many coastal environments and the marine energy farms, besides providing electricity, can become an effective solution in the struggle against the coastal erosion [25][26][27].From this perspective, the present work has as a main objective to assess the most recent wave energy propagation patterns in the western side of the Black Sea. This considers also the fact that there is an obvious dynamics of the wave climate in the Black Sea having as a consequence important changes in the actual patterns of the nearshore wave propagation and inducing significant enhancements of the wave power.…”

mentioning

confidence: 99%

Study of the Wave Energy Propagation Patterns in the Western Black Sea

Rusu

2018

Applied Sciences

View full text Add to dashboard Cite

The most relevant patterns of the wave energy propagation in the western side of the Black Sea were assessed in the present work. The emphasis was put on the western side because this is also the most energetic part of the Black Sea. The assessments performed relate some recent results provided by a numerical wave modeling system based on the spectrum concept. The SWAN model (acronym for Simulating Waves Nearshore) was considered. This was implemented over the entire sea basin and focused with increasing resolution in the geographical space towards the Romanian nearshore. Furthermore, some data assimilation techniques have also been implemented, such that the results provided are accurate and reliable. Special attention was paid to the high, but not extreme, winter wave energy conditions. The cases considered are focused on the coastal waves generated by distant storms, which means the local wind has not very high values in the targeted areas. This also takes into account the fact that the configuration of the environmental matrix in the Black Sea is currently subjected to significant changes mainly due to the climate change. From this perspective, the present work illustrates some of the most recent patterns of wave energy propagation in the western side of the Black Sea, considering eight different SWAN computational domains. According to most of the recent evaluations, the nearshore of the Black Sea is characterized by an average wave power lower than 6 kW/m. The results of the present work show that there is a real tendency of the wave energy enhancement. This tendency, especially concerns the western side of the basin, where in the high conditions considered, values of the wave power about 10 times greater than the average have been noticed. despite some initial difficulties related to the high cost of installation and operating conditions in the harsh marine environment, very high dynamics in increasing the efficiency of the offshore wind can be also noticed. This is measured, especially through the levelized cost of energy (LCOE), which reached a record value of about 7 c€/kWh in 2017, or less. Thus, 5.5 c€/kWh have been reported at the 700 MW Borssele (The Netherlands) due to government tender and size, and 5c €/kWh (without transmission) at the 600 MW Kriegers Flak (Denmark) [2]. This means the offshore wind becomes now not only the cheapest marine renewable energy resource, but it is also cheaper than some traditional resources. For example, the current average LCOE for atomic energy is still about 11 c€/kWh, or greater [3].Various studies [4][5][6][7] showed that the wind energy resources along the coasts of the Black Sea, and especially in its western side, are comparable with those from many offshore wind farms that are already operational [8][9][10][11]. Thus, it is expected that the high dynamics of the offshore wind industry will have as a result also the implementation of some wind farm projects in the nearshore of the Black Sea, in general and in its western side, which is more energetic, in spe...

show abstract

“…Since the wave energy sector is moving forward, the next step is to assemble various wave farms and test their operation. Therefore, it is important to predict in advance the expected coastal impact of such a project [44][45][46][47].…”

Section: Introductionmentioning

confidence: 99%

An Overview of the Expected Shoreline Impact of the Marine Energy Farms Operating in Different Coastal Environments

Raileanu

Onea

Rusu

2020

JMSE

View full text Add to dashboard Cite

The aim of the present work is to provide an overview of the possible implications involving the influence of a generic marine energy farm on the nearshore processes. Several case studies covering various European coastal areas are considered for illustration purposes. These include different nearshore areas, such as the Portuguese coast, Sardinia Island or a coastal sector close to the Danube Delta in the Black Sea. For the case studies related to the Portuguese coast, it is noted that a marine energy farm may reduce the velocity of the longshore currents, with a complete attenuation of the current velocity for some case studies in the coastal area from Leixoes region being observed. For the area located close to the Danube Delta, it is estimated that in the proposed configuration, a marine energy farm would provide an efficient protection against the wave action, but it will have a relatively negligible impact on the longshore currents. Summarizing the results, we can conclude that a marine energy farm seems to be beneficial for coastal protection, even in the case of the enclosed areas, such as the Mediterranean or Black seas, where the erosion generated by the wave action represents a real problem.

show abstract

Wave farm effects on the coast: The alongshore position

Cited by 43 publications

References 57 publications

Dual wave farms and coastline dynamics: The role of inter-device spacing

Dual wave farms and coastline dynamics: The role of inter-device spacing

Study of the Wave Energy Propagation Patterns in the Western Black Sea

An Overview of the Expected Shoreline Impact of the Marine Energy Farms Operating in Different Coastal Environments

Contact Info

Product

Resources

About