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Energies 2018, 11(4), 964; https://doi.org/10.3390/en11040964

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

1
Department of Engineering Sciences, Uppsala University, 75105 Uppsala, Sweden
2
Mocean Energy, Edinburgh EH9 3BF, UK
*
Author to whom correspondence should be addressed.
Received: 22 March 2018 / Revised: 13 April 2018 / Accepted: 13 April 2018 / Published: 17 April 2018
(This article belongs to the Special Issue Wave Energy Potential, Behavior and Extraction)
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Abstract

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. View Full-Text
Keywords: wave energy; short-crested waves; multidirectional; arrays; parks; multiple scattering; power fluctuations wave energy; short-crested waves; multidirectional; arrays; parks; multiple scattering; power fluctuations
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Göteman, M.; McNatt, C.; Giassi, M.; Engström, J.; Isberg, J. Arrays of Point-Absorbing Wave Energy Converters in Short-Crested Irregular Waves. Energies 2018, 11, 964.

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