Experimental Measurement of Wave Field Variations around Wave Energy Converter Arrays

Louise O'Boyle, Björn Elsäßer, Trevor Whittaker

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Wave energy converters (WECs) inherently extract energy from incident waves. For wave energy to become a significant power provider in the future, large farms of WECs will be required. This scale of energy extraction will increase the potential for changes in the local wave field and coastal environment. Assessment of these effects is necessary to inform decisions on the layout of wave farms for optimum power output and minimum environmental impact, as well as on potential site selection. An experimental campaign to map, at high resolution, the wave field variation around arrays of 5 oscillating water column WECs and a methodology for extracting scattered and radiated waves is presented. The results highlight the importance of accounting for the full extent of the WEC behavior when assessing impacts on the wave field. The effect of radiated waves on the wave field is not immediately apparent when considering changes to the entire wave spectrum, nor when observing changes in wave climate due to scattered and radiated waves superimposed together. The results show that radiated waves may account for up to 50% of the effects on wave climate in the near field in particular operating conditions.
LanguageEnglish
Article number70
Number of pages16
JournalSustainability
Volume9
Issue number1
DOIs
Publication statusPublished - 05 Jan 2017

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wave field
wave energy
energy
wave climate
farm
climate
wave spectrum
site selection
coastal zone
layout
environmental impact
water column
incident
campaign
Farms
methodology
water
effect
Site selection

Keywords

  • wave energy converter arrays
  • wave fields
  • environmental impact
  • experimental testing
  • polychromatic wave packet

Cite this

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title = "Experimental Measurement of Wave Field Variations around Wave Energy Converter Arrays",
abstract = "Wave energy converters (WECs) inherently extract energy from incident waves. For wave energy to become a significant power provider in the future, large farms of WECs will be required. This scale of energy extraction will increase the potential for changes in the local wave field and coastal environment. Assessment of these effects is necessary to inform decisions on the layout of wave farms for optimum power output and minimum environmental impact, as well as on potential site selection. An experimental campaign to map, at high resolution, the wave field variation around arrays of 5 oscillating water column WECs and a methodology for extracting scattered and radiated waves is presented. The results highlight the importance of accounting for the full extent of the WEC behavior when assessing impacts on the wave field. The effect of radiated waves on the wave field is not immediately apparent when considering changes to the entire wave spectrum, nor when observing changes in wave climate due to scattered and radiated waves superimposed together. The results show that radiated waves may account for up to 50{\%} of the effects on wave climate in the near field in particular operating conditions.",
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Experimental Measurement of Wave Field Variations around Wave Energy Converter Arrays. / O'Boyle, Louise; Elsäßer, Björn; Whittaker, Trevor.

In: Sustainability, Vol. 9, No. 1, 70, 05.01.2017.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Experimental Measurement of Wave Field Variations around Wave Energy Converter Arrays

AU - O'Boyle, Louise

AU - Elsäßer, Björn

AU - Whittaker, Trevor

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Y1 - 2017/1/5

N2 - Wave energy converters (WECs) inherently extract energy from incident waves. For wave energy to become a significant power provider in the future, large farms of WECs will be required. This scale of energy extraction will increase the potential for changes in the local wave field and coastal environment. Assessment of these effects is necessary to inform decisions on the layout of wave farms for optimum power output and minimum environmental impact, as well as on potential site selection. An experimental campaign to map, at high resolution, the wave field variation around arrays of 5 oscillating water column WECs and a methodology for extracting scattered and radiated waves is presented. The results highlight the importance of accounting for the full extent of the WEC behavior when assessing impacts on the wave field. The effect of radiated waves on the wave field is not immediately apparent when considering changes to the entire wave spectrum, nor when observing changes in wave climate due to scattered and radiated waves superimposed together. The results show that radiated waves may account for up to 50% of the effects on wave climate in the near field in particular operating conditions.

AB - Wave energy converters (WECs) inherently extract energy from incident waves. For wave energy to become a significant power provider in the future, large farms of WECs will be required. This scale of energy extraction will increase the potential for changes in the local wave field and coastal environment. Assessment of these effects is necessary to inform decisions on the layout of wave farms for optimum power output and minimum environmental impact, as well as on potential site selection. An experimental campaign to map, at high resolution, the wave field variation around arrays of 5 oscillating water column WECs and a methodology for extracting scattered and radiated waves is presented. The results highlight the importance of accounting for the full extent of the WEC behavior when assessing impacts on the wave field. The effect of radiated waves on the wave field is not immediately apparent when considering changes to the entire wave spectrum, nor when observing changes in wave climate due to scattered and radiated waves superimposed together. The results show that radiated waves may account for up to 50% of the effects on wave climate in the near field in particular operating conditions.

KW - wave energy converter arrays

KW - wave fields

KW - environmental impact

KW - experimental testing

KW - polychromatic wave packet

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