LAPSE:2019.0048
Published Article
LAPSE:2019.0048
An Experimental Study of Pile-Supported OWC-Type Breakwaters: Energy Extraction and Vortex-Induced Energy Loss
Fang He, Mingjia Li, Zhenhua Huang
January 7, 2019
Integrating wave energy converters with breakwaters is a promising concept for wave energy utilization. On the basis of fulfilling the wave protection demands, pile-supported Oscillating Water Column (OWC)-type breakwaters can also meet the local needs of electricity far from the lands. In the present study, the wave energy extraction and vortex-induced energy loss of pile-supported OWC-type breakwaters were analyzed based on a two-point measurement method. The importance of energy extraction and vortex-induced energy loss on the wave energy dissipation of pile-supported OWC-type breakwaters were experimentally investigated. It was found that the trends of energy extraction and vortex-induced energy loss were generally correlated. The effects of the pneumatic damping induced by top opening affected the vortex-induced energy loss more than the energy extraction. Results showed that a larger pneumatic damping was preferable for the purpose of increasing energy extraction, whereas for a smaller pneumatic damping the vortex-induced energy loss was more important to the energy dissipation. With increasing draft, the energy extraction decreased, but the vortex-induced energy loss complementally contributed to the total energy dissipation and made the energy dissipation at the same level as that for a shallower draft.
Keywords
experimental study, orifice characteristics, oscillating water column, pile-supported breakwater, pneumatic damping, vortex-induced energy loss, wave energy dissipation, wave energy extraction
Suggested Citation
He F, Li M, Huang Z. An Experimental Study of Pile-Supported OWC-Type Breakwaters: Energy Extraction and Vortex-Induced Energy Loss. (2019). LAPSE:2019.0048
Author Affiliations
He F: Ocean College, Zhejiang University, Hangzhou 310058, China
Li M: Ocean College, Zhejiang University, Hangzhou 310058, China
Huang Z: Department of Ocean and Resources Engineering, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, Honolulu, HI 96822, USA
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Journal Name
Energies
Volume
9
Issue
7
Article Number
E540
Year
2016
Publication Date
2016-07-13
Published Version
ISSN
1996-1073
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PII: en9070540, Publication Type: Journal Article
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LAPSE:2019.0048
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doi:10.3390/en9070540
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Jan 7, 2019
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Calvin Tsay
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