Arrays of Point-Absorbing Wave Energy Converters in Short-Crested Irregular Waves

For most wave energy technology concepts, large-scale electricity production and cost-efficiency require that the devices are installed together in parks. The hydrodynamical interactions between the devices will affect the total performance of the park, and the optimization of the park layout and ot...

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Main Authors: Malin Göteman, Cameron McNatt, Marianna Giassi, Jens Engström, Jan Isberg
Format: Article
Language:English
Published: MDPI AG 2018-04-01
Series:Energies
Subjects:
Online Access:http://www.mdpi.com/1996-1073/11/4/964
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author Malin Göteman
Cameron McNatt
Marianna Giassi
Jens Engström
Jan Isberg
author_facet Malin Göteman
Cameron McNatt
Marianna Giassi
Jens Engström
Jan Isberg
author_sort Malin Göteman
collection DOAJ
description For most wave energy technology concepts, large-scale electricity production and cost-efficiency require that the devices are installed together in parks. The hydrodynamical interactions between the devices will affect the total performance of the park, and the optimization of the park layout and other park design parameters is a topic of active research. Most studies have considered wave energy parks in long-crested, unidirectional waves. However, real ocean waves can be short-crested, with waves propagating simultaneously in several directions, and some studies have indicated that the wave energy park performance might change in short-crested waves. Here, theory for short-crested waves is integrated in an analytical multiple scattering method, and used to evaluate wave energy park performance in irregular, short-crested waves with different number of wave directions and directional spreading parameters. The results show that the energy absorption is comparable to the situation in long-crested waves, but that the power fluctuations are significantly lower.
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spelling doaj.art-76dffda6ab6947ff8214b3eed32547a72022-12-22T02:22:40ZengMDPI AGEnergies1996-10732018-04-0111496410.3390/en11040964en11040964Arrays of Point-Absorbing Wave Energy Converters in Short-Crested Irregular WavesMalin Göteman0Cameron McNatt1Marianna Giassi2Jens Engström3Jan Isberg4Department of Engineering Sciences, Uppsala University, 75105 Uppsala, SwedenMocean Energy, Edinburgh EH9 3BF, UKDepartment of Engineering Sciences, Uppsala University, 75105 Uppsala, SwedenDepartment of Engineering Sciences, Uppsala University, 75105 Uppsala, SwedenDepartment of Engineering Sciences, Uppsala University, 75105 Uppsala, SwedenFor most wave energy technology concepts, large-scale electricity production and cost-efficiency require that the devices are installed together in parks. The hydrodynamical interactions between the devices will affect the total performance of the park, and the optimization of the park layout and other park design parameters is a topic of active research. Most studies have considered wave energy parks in long-crested, unidirectional waves. However, real ocean waves can be short-crested, with waves propagating simultaneously in several directions, and some studies have indicated that the wave energy park performance might change in short-crested waves. Here, theory for short-crested waves is integrated in an analytical multiple scattering method, and used to evaluate wave energy park performance in irregular, short-crested waves with different number of wave directions and directional spreading parameters. The results show that the energy absorption is comparable to the situation in long-crested waves, but that the power fluctuations are significantly lower.http://www.mdpi.com/1996-1073/11/4/964wave energyshort-crested wavesmultidirectionalarraysparksmultiple scatteringpower fluctuations
spellingShingle Malin Göteman
Cameron McNatt
Marianna Giassi
Jens Engström
Jan Isberg
Arrays of Point-Absorbing Wave Energy Converters in Short-Crested Irregular Waves
Energies
wave energy
short-crested waves
multidirectional
arrays
parks
multiple scattering
power fluctuations
title Arrays of Point-Absorbing Wave Energy Converters in Short-Crested Irregular Waves
title_full Arrays of Point-Absorbing Wave Energy Converters in Short-Crested Irregular Waves
title_fullStr Arrays of Point-Absorbing Wave Energy Converters in Short-Crested Irregular Waves
title_full_unstemmed Arrays of Point-Absorbing Wave Energy Converters in Short-Crested Irregular Waves
title_short Arrays of Point-Absorbing Wave Energy Converters in Short-Crested Irregular Waves
title_sort arrays of point absorbing wave energy converters in short crested irregular waves
topic wave energy
short-crested waves
multidirectional
arrays
parks
multiple scattering
power fluctuations
url http://www.mdpi.com/1996-1073/11/4/964
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