Improving predictions of the coastal impacts of wave farms using a phase-resolving wave model

Research output: Chapter in Book/Conference paperConference paper

Abstract

Commensurate with their extraction of energy, farms
of Wave Energy Converters (WECs) may significantly alter wave
fields in their lee, and as a result, potentially impact an adjacent
shoreline. Most previous studies to assess the coastal impact of
wave farms have used phase-averaged wave models, which do not
fully represent all relevant physical processes (e.g., diffraction and
the wave-WEC interactions) that may in turn result in unrealistic
downstream effects. Although a more advanced method has been
developed based on the mild-slope equations, this technique is
inherently limited to linear waves over mildly sloping beaches. In
this work we set out to develop a fully nonlinear phase-resolving
wave model to accurately resolve both the nonlinear evolution of
waves in an arbitrary coastal region, and the wave-WEC and
WEC-WEC interactions. A comparison of results of the new
model with a potential flow solution shows that the model can
accurately simulate the wave-induced response of a submerged
device. Furthermore, we demonstrate the models application to
study the downstream impact of a WEC and illustrate its
advantages over phase-averaged models. These results illustrate
that the developed approach provides a promising new alternative
to predict the coastal impact of a wave farm.
Original languageEnglish
Title of host publicationProceedings of the 12th European Wave and Tidal Energy Conference
Publication statusPublished - 2019
Event12th European Wave and Tidal Energy Conference - Cork, Ireland, United Kingdom
Duration: 27 Aug 20171 Sep 2017
http://www.ewtec.org/ewtec-2017/

Conference

Conference12th European Wave and Tidal Energy Conference
CountryUnited Kingdom
CityCork, Ireland
Period27/08/171/09/17
Internet address

Fingerprint

wave energy
farm
prediction
wave diffraction
potential flow
induced response
beach
energy

Cite this

@inproceedings{592c710f5bf641a5a48d8bbeb086b3ff,
title = "Improving predictions of the coastal impacts of wave farms using a phase-resolving wave model",
abstract = "Commensurate with their extraction of energy, farmsof Wave Energy Converters (WECs) may significantly alter wavefields in their lee, and as a result, potentially impact an adjacentshoreline. Most previous studies to assess the coastal impact ofwave farms have used phase-averaged wave models, which do notfully represent all relevant physical processes (e.g., diffraction andthe wave-WEC interactions) that may in turn result in unrealisticdownstream effects. Although a more advanced method has beendeveloped based on the mild-slope equations, this technique isinherently limited to linear waves over mildly sloping beaches. Inthis work we set out to develop a fully nonlinear phase-resolvingwave model to accurately resolve both the nonlinear evolution ofwaves in an arbitrary coastal region, and the wave-WEC andWEC-WEC interactions. A comparison of results of the newmodel with a potential flow solution shows that the model canaccurately simulate the wave-induced response of a submergeddevice. Furthermore, we demonstrate the models application tostudy the downstream impact of a WEC and illustrate itsadvantages over phase-averaged models. These results illustratethat the developed approach provides a promising new alternativeto predict the coastal impact of a wave farm.",
author = "Rijnsdorp, {Dirk P.} and Jeff Hansen and Ryan Lowe",
year = "2019",
language = "English",
booktitle = "Proceedings of the 12th European Wave and Tidal Energy Conference",

}

Rijnsdorp, DP, Hansen, J & Lowe, R 2019, Improving predictions of the coastal impacts of wave farms using a phase-resolving wave model. in Proceedings of the 12th European Wave and Tidal Energy Conference. 12th European Wave and Tidal Energy Conference, Cork, Ireland, United Kingdom, 27/08/17.

Improving predictions of the coastal impacts of wave farms using a phase-resolving wave model. / Rijnsdorp, Dirk P.; Hansen, Jeff; Lowe, Ryan .

Proceedings of the 12th European Wave and Tidal Energy Conference. 2019.

Research output: Chapter in Book/Conference paperConference paper

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N2 - Commensurate with their extraction of energy, farmsof Wave Energy Converters (WECs) may significantly alter wavefields in their lee, and as a result, potentially impact an adjacentshoreline. Most previous studies to assess the coastal impact ofwave farms have used phase-averaged wave models, which do notfully represent all relevant physical processes (e.g., diffraction andthe wave-WEC interactions) that may in turn result in unrealisticdownstream effects. Although a more advanced method has beendeveloped based on the mild-slope equations, this technique isinherently limited to linear waves over mildly sloping beaches. Inthis work we set out to develop a fully nonlinear phase-resolvingwave model to accurately resolve both the nonlinear evolution ofwaves in an arbitrary coastal region, and the wave-WEC andWEC-WEC interactions. A comparison of results of the newmodel with a potential flow solution shows that the model canaccurately simulate the wave-induced response of a submergeddevice. Furthermore, we demonstrate the models application tostudy the downstream impact of a WEC and illustrate itsadvantages over phase-averaged models. These results illustratethat the developed approach provides a promising new alternativeto predict the coastal impact of a wave farm.

AB - Commensurate with their extraction of energy, farmsof Wave Energy Converters (WECs) may significantly alter wavefields in their lee, and as a result, potentially impact an adjacentshoreline. Most previous studies to assess the coastal impact ofwave farms have used phase-averaged wave models, which do notfully represent all relevant physical processes (e.g., diffraction andthe wave-WEC interactions) that may in turn result in unrealisticdownstream effects. Although a more advanced method has beendeveloped based on the mild-slope equations, this technique isinherently limited to linear waves over mildly sloping beaches. Inthis work we set out to develop a fully nonlinear phase-resolvingwave model to accurately resolve both the nonlinear evolution ofwaves in an arbitrary coastal region, and the wave-WEC andWEC-WEC interactions. A comparison of results of the newmodel with a potential flow solution shows that the model canaccurately simulate the wave-induced response of a submergeddevice. Furthermore, we demonstrate the models application tostudy the downstream impact of a WEC and illustrate itsadvantages over phase-averaged models. These results illustratethat the developed approach provides a promising new alternativeto predict the coastal impact of a wave farm.

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