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Hydrodynamic performance of a pile-restrained WEC-type floating breakwater: An experimental study
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, 116024, China.
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, 116024, China.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity. (Div. for Electricity)
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, 116024, China.
2016 (English)In: Renewable energy, ISSN 0960-1481, E-ISSN 1879-0682, Vol. 95, 531-541 p.Article in journal (Refereed) Published
Abstract [en]

In this paper, a system which integrates an oscillating buoy type wave energy converter with a vertical pile-restrained floating breakwater is introduced. A preliminary experimental study on the hydrodynamic performance of the system is carried out in a wave flume under the action of regular waves. A current controller-magnetic powder brake system is used to simulate the power generation system. The design is verified against published results. The power-take off damping characteristics are investigated, and the current controller-magnetic powder brake system can simulate the (approximate) Coulomb damping force very well. The effects of various parameters, including wave period and wave height, dimensions of the system and excitation current, on the hydrodynamic performance are investigated. Results indicate that the power take-off damping force, draft and relative width between the floating breakwater and the wavelength have a significant influence on the hydrodynamic performance of the system. A range can be observed for which the capture width ratio of the system can achieve approximately 24% while transmission coefficient was kept lower than 0.50 with the proper adjustment of power take-off damping force, and the floating breakwater performs in an effective manner. The new concept provides a promising way to utilize wave energy cost-effectively.

Place, publisher, year, edition, pages
2016. Vol. 95, 531-541 p.
Keyword [en]
Floating breakwater; Wave energy converter; Integrated system; Cost-effective; Dual function
National Category
Energy Engineering Ocean and River Engineering
Identifiers
URN: urn:nbn:se:uu:diva-294377DOI: 10.1016/j.renene.2016.04.057ISI: 000377311000047OAI: oai:DiVA.org:uu-294377DiVA: diva2:929663
Available from: 2016-05-19 Created: 2016-05-19 Last updated: 2016-07-14Bibliographically approved

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