Wave Climate Resource Analysis Based on a Revised Gamma Spectrum for Wave Energy Conversion Technology

Pastor, Jeremiah; Liu, Yucheng

doi:10.3390/su8121321

Cited by 39 publications

(22 citation statements)

References 18 publications

(23 reference statements)

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“…The measurements have a 6-h time step (00-06-12-18 UTC): In order to identify the wave variations in the offshore areas, two reference points (OP1 and OP2) were defined in the western and eastern parts of the sea, respectively. Besides the climatological investigations, the information provided by the nearshore points can be considered relevant for activities related to coastal engineering works or renewable projects, while the offshore points may hold interest for marine navigation and sea safety [28,29]. Most of the research effort is focused on the Black Sea basin, while the conditions from the Azov Sea are less discussed.…”

Section: The Target Areasmentioning

confidence: 99%

“…Besides the climatological investigations, the information provided by the nearshore points can be considered relevant for activities related to coastal engineering works or renewable projects, while the offshore points may hold interest for marine navigation and sea safety [28,29]. Most of the research effort is focused on the Black Sea basin, while the conditions from the Azov Sea are less discussed.…”

Section: The Ecmwf Datasetmentioning

confidence: 99%

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A Long-Term Assessment of the Black Sea Wave Climate

Onea

Rusu

2017

Sustainability

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Abstract:In the present work the Black Sea wave climate is assessed using a total of 38 years of data . As a first step, the long-term variations of the main wave parameters were evaluated using data provided by the European Center for Medium-Range Weather Forecasts (ECMWF). Based on these values, the nearshore and offshore conditions from the Black Sea were evaluated. Moreover, the Sea of Azov was also targeted in this study, since in some cases the conditions are comparable with those of the Black Sea. Going up to the present day, the regional wave climate was assessed through satellite measurements provided by the AVISO project, at the same time indicating the differences between these data and the ECMWF reanalysis dataset. In general, the conditions reported in the northwestern sector of the Black Sea seem to be more energetic, indicating more frequently the presence of rough conditions. Finally, it can be concluded that the results presented in the present study cover a broad range of applications in climatological studies and other types of research related to coastal protection.

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Section: The Target Areasmentioning

confidence: 99%

Section: The Ecmwf Datasetmentioning

confidence: 99%

A Long-Term Assessment of the Black Sea Wave Climate

Onea

Rusu

2017

Sustainability

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“…The importance of understanding the most common spectral shapes at a potential WEC site have been illustrated by [8], who showed that they can directly affect the degree of wave shadowing predicted (if frequency dependent modelling is applied), especially in the presence of bimodal spectra. Recent work by [35][36][37] has sought to further characterise wave spectra at a given location for the purposes of wave energy resource assessment, including during bimodal wave conditions. Previous WEC modelling at Wave Hub [6] was critiqued [27] for applying default wave directional spreading values that were not representative of the site under study, or of wave conditions of interest to surfers.…”

Section: Effects Of Wave Energy Extraction On Wave Climatementioning

confidence: 99%

Modelling Offshore Wave farms for Coastal Process Impact Assessment: Waves, Beach Morphology, and Water Users

Stokes

Conley

2018

Energies

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The emerging global wave energy industry has the potential to contribute to the world's energy needs, but careful consideration of potential impacts to coastal processes in the form of an impact assessment is required for each new wave energy site. Methods for conducting a coastal processes impact assessment for wave energy arrays vary considerably in the scientific literature, particularly with respect to characterising the energy absorption of a wave energy converter (WEC) array in a wave model. In this paper, modelling methods used in the scientific literature to study wave farm impacts on coastal processes are reviewed, with the aim of determining modelling guidance for impact assessments. Effects on wave climate, beach morphology, and the surfing resource for coastal water users are considered. A novel parameterisation for the WEC array transmission coefficient is presented that, for the first time, uses the permitted power rating of the wave farm, which is usually well defined at the impact assessment stage, to estimate the maximum likely absorption of a permitted WEC array. A coastal processes impact assessment case study from a wave farm in south-west Ireland is used to illustrate the application of the reviewed methods, and demonstrates that using the new 'rated power transmission coefficient' rather than a WEC-derived transmission coefficient or complete energy absorption scenario can make the difference between significant and non-significant levels of coastal impacts being predicted.

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“…Much work, both theoretical [13][14][15][16] and experimental [17][18][19], has been accomplished to maximize the power absorption and increase the force in the connection line for this type of WEC. An optimal WEC with high power output and high survivability will have high mean forces and low peak forces.…”

Section: Introductionmentioning

confidence: 99%

Peak Forces on Wave Energy Linear Generators in Tsunami and Extreme Waves

Sjökvist

Göteman

2017

Energies

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Abstract:The focus of this paper is the survivability of wave energy converters (WECs) in extreme waves and tsunamis, using realistic WEC parameters. The impact of a generator damping factor has been studied, and the peak forces plotted as a function of wave height. The paper shows that an increased damping decreases the force in the endstop hit, which is in agreement with earlier studies. However, when analyzing this in more detail, we can show that friction damping and velocity dependent generator damping affect the performance of the device differently, and that friction can have a latching effect on devices in tsunami waves, leading to higher peak forces. In addition, we study the impact of different line lengths, and find that longer line lengths reduce the endstop forces in extreme regular waves, but on the contrary increase the forces in tsunami waves due to the different fluid velocity fields.

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Wave Climate Resource Analysis Based on a Revised Gamma Spectrum for Wave Energy Conversion Technology

Cited by 39 publications

References 18 publications

A Long-Term Assessment of the Black Sea Wave Climate

A Long-Term Assessment of the Black Sea Wave Climate

Modelling Offshore Wave farms for Coastal Process Impact Assessment: Waves, Beach Morphology, and Water Users

Peak Forces on Wave Energy Linear Generators in Tsunami and Extreme Waves

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