期刊
OCEAN ENGINEERING
卷 220, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.oceaneng.2020.108394
关键词
Wave energy converters; Multi-pontoon system; Floating breakwaters; Analytical model; Effective frequency bandwidth
资金
- National Natural Science Foundation of China [52001086]
- Key Program for International Scientific and Technological Innovation Cooperation between Governments [2019YFE0102500]
- Open Foundation of State Key Laboratory of Coastal and Offshore Engineering, China [LP1927]
- National Key Research and Development Project of China [2019YFB1504403]
- China Postdoctoral Science Foundation [2019M661257]
Based on linear potential flow theory and the matching eigenfunction expansion method, an analytical model is developed to investigate the hydrodynamics of two-dimensional multi-pontoon floating breakwaters that also work as oscillating buoy wave energy converters. The model is verified using the principle of energy conservation, and results show superior wave attenuation performance, energy capture performance, and effective frequency bandwidth in multi-pontoon systems compared to single-pontoon systems with the same volume.
Based on linear potential flow theory and the matching eigenfunction expansion method, an analytical model is developed to investigate the hydrodynamics of two-dimensional multi-pontoon floating breakwaters that also work as oscillating buoy wave energy converters. The pontoons are constrained to independent heave motion and the linear power take-off damping is used to calculate the absorbed power. The proposed model is verified using the principle of energy conservation. Performance of the system with different numbers of pontoons is studied, and the results show that the wave attenuation performanceper, the energy capture performance, and the effective frequency bandwidth are superior in the multi-pontoon system as compared to the single-pontoon systems with the same volume. Bragg resonance dominates the wave energy extraction performance at certain frequencies, which reduces the hydrodynamic efficiency. Conversely, in the frequency region away from Bragg resonance, the hydrodynamic efficiency is enhanced due to the constructive hydrodynamic interactions of the multi-body system.
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