MODELLING OF WAVE ATTENUATION INDUCED BY MULTI-PURPOSE FLOATING STRUCTURES USED FOR POWER SUPPLY AND COASTAL PROTECTION

Proceedings of the International Conference on Coastal Engineering

Michel Benoit⁷  Tim Stallard⁶  Peter Troch⁵  Vasiliki Stratigaki⁵  Matt Folley⁴  Jens Peter Kofoed²  Aurelien Babarit⁸  David Forehand¹  Jens Kirkegaard³ 

[1] The University of Edinburgh, School of Engineering, Institute for Energy Systems, Edinburgh, EH9 3JL, UK;Aalborg University, Department of Civil Engineering, Wave Energy Research Group, Aalborg 9000, Denmark.;Ports and Offshore Technology, DHI, Agern Allé 5, Hørsholm DK-2970;Queen’s University Belfast, School of Planning, Architecture & Civil Engineering, Belfast  BT9 5AG, Northern Ireland, UK.;Ghent University, Department of Civil Engineering, Technologiepark 904, Zwijnaarde, B-9052, Belgium.;University of Manchester, School of Mechanical Aerospace and Civil Engineering, Manchester, M13 9PL, UK.;Saint-Venant Laboratory for Hydraulics, EDF - Recherche et Développement, Laboratoire Saint-Venant (EDF R&D, CETMEF, Ecole des Ponts ParisTech), Chatou 78401, France.;Ecole Centrale de Nantes, LHEAA Lab - CNRS UMR6598: Hydrodynamics, Energetics, Atmospheric Environment, Nantes 44321, France

关键词: coastal protection;    wave energy converters;    WEC farms;    WEC parks;    wave height attenuation;    floating structures;    point absorber WECs;    EU FP7 HYDRALAB IV;    DHI Shallow Water Wave Basin;   

DOI  :  10.9753/icce.v34.waves.20

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

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 5x5-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.

【 授权许可】

Unknown