Numerical simulation of wake effects in the lee of a farm of wave energy converters

Charlotte Beels, Peter Troch, Julien De Rouck, Tom Versluys, Griet De Backer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

The contribution of wave energy to the renewable energy supply is rising. To extract a considerable amount of wave power, Wave Energy Converters (WECs) are arranged in several rows or in a farm '. WECs in a farm are interacting (e.g. The presence of other WECs influence the operational behaviour of a single WEC) and the overall power absorption is affected. In this paper wake effects in the lee of a single WEC and multiple WECs of the overtopping type, where the water volume of overtopped waves is first captured in a basin above mean sea level and then drains back to the sea through hydro turbines, are studied in a time-dependent mild-slope equation model. The wake behind a single WEC is investigated for uni- and multi-directional incident waves. The wake becomes wider for larger wave peak periods. An increasing directional spreading results in a faster wave regeneration and a shorter wake behind the WEC. The wake in the lee of multiple WECs is calculated for two different farm lay-outs, i.e. an aligned grid and a staggered grid, with varying lateral and longitudinal spacing. In general, the staggered grid results in the highest overall wave power absorption.

Original languageEnglish (US)
Title of host publicationProceedings of the 28th International Conference on Ocean, Offshore and Arctic Engineering 2009, OMAE2009
Pages961-971
Number of pages11
EditionPART B
DOIs
StatePublished - Dec 1 2009
Externally publishedYes
Event28th International Conference on Ocean, Offshore and Arctic Engineering, OMAE2009 - Honolulu, HI, United States
Duration: May 31 2009Jun 5 2009

Publication series

NameProceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
NumberPART B
Volume4

Other

Other28th International Conference on Ocean, Offshore and Arctic Engineering, OMAE2009
Country/TerritoryUnited States
CityHonolulu, HI
Period5/31/096/5/09

ASJC Scopus subject areas

  • Ocean Engineering
  • Energy Engineering and Power Technology
  • Mechanical Engineering

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