TY - GEN
T1 - Modelling of wave attenuation induced by multi-purpose floating structures used for power supply and coastal protection
AU - Stratigaki, Vasiliki
AU - Troch, Peter
AU - Stallard, Tim
AU - Forehand, David
AU - Kofoed, Jens Peter
AU - Folley, Matt
AU - Benoit, Michel
AU - Babarit, Aurélien
AU - Kirkegaard, Jens
PY - 2014/1/1
Y1 - 2014/1/1
N2 - Experiments have been performed in the Shallow Water Wave Basin of DHI (Hørsholm, Denmark) within the EU FP7 Hydralab Programme, on large farms of up to 25 heaving point absorber type Wave Energy Converters (WECs). For a range of geometric lay-out configurations and wave conditions (regular, polychromatic, long- and short-crested irregular waves), WEC response and modification of the wave field have been measured to provide data for the understanding of WEC farm interactions and for the evaluation of farm interaction numerical models. A first extensive wave farm database is established. The experimental arrangement and the obtained database are presented, as well as results for wave height attenuation downwave of the farms. For long-crested irregular waves, up to 18.1 % and 20.8 % reduction in significant wave height is observed downwave of the 5×5-WEC rectilinear and staggered farm, respectively. Wave height attenuation is expected to be larger, since in practical wave farm applications WECs will be controlled to extract a large amount of power from the waves, and therefore the array will cause larger wave height dissipation. These findings present the ability to combine the harvesting of energy from sea waves with coastal defence systems, resulting in cost reduction for both applications when WECs operate as multi-purpose devices.
AB - Experiments have been performed in the Shallow Water Wave Basin of DHI (Hørsholm, Denmark) within the EU FP7 Hydralab Programme, on large farms of up to 25 heaving point absorber type Wave Energy Converters (WECs). For a range of geometric lay-out configurations and wave conditions (regular, polychromatic, long- and short-crested irregular waves), WEC response and modification of the wave field have been measured to provide data for the understanding of WEC farm interactions and for the evaluation of farm interaction numerical models. A first extensive wave farm database is established. The experimental arrangement and the obtained database are presented, as well as results for wave height attenuation downwave of the farms. For long-crested irregular waves, up to 18.1 % and 20.8 % reduction in significant wave height is observed downwave of the 5×5-WEC rectilinear and staggered farm, respectively. Wave height attenuation is expected to be larger, since in practical wave farm applications WECs will be controlled to extract a large amount of power from the waves, and therefore the array will cause larger wave height dissipation. These findings present the ability to combine the harvesting of energy from sea waves with coastal defence systems, resulting in cost reduction for both applications when WECs operate as multi-purpose devices.
KW - Coastal protection
KW - DHI Shallow Water Wave Basin
KW - EU FP7 HYDRALAB IV
KW - Floating structures
KW - Point absorber WECs
KW - WEC farms
KW - WEC parks
KW - Wave energy converters
KW - Wave height attenuation
UR - https://www.scopus.com/pages/publications/84957632404
M3 - Conference contribution
AN - SCOPUS:84957632404
T3 - Proceedings of the Coastal Engineering Conference
BT - Proceedings of the 34th International Conference on Coastal Engineering, ICCE 2014
A2 - Lynett, Patrick
PB - American Society of Civil Engineers (ASCE)
T2 - 34th International Conference on Coastal Engineering, ICCE 2014
Y2 - 15 June 2014 through 20 June 2014
ER -