Abstract
Two asymmetric types of floating breakwaters integrated with a wave energy converter (WEC-FBs), a floating square box with a triangle (trapezoidal type) or a wave baffle (L type) attached to its rear side, have been proposed. In this research, the hydrodynamic performance, including capture width ratio (CWR), wave transmission coefficient, heave motion, and force coefficient, were studied and compared between the two types. A numerical simulation model based on the Navier–Stokes equation was employed. The effects of power take-off (PTO) damping coefficient, wave periods, and draft/displacement on the hydrodynamic performance of the two structure shapes were simulated and investigated. The results reveal that the L type performs better in shorter wave periods, and the trapezoidal type exhibits a higher CWR in intermediate wave periods. This study offers knowledge of the design and protection of the two WEC-FB types.
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Funding Supported by Shandong Provincial Natural Science Foundation, China (ZR2020ME259), and Open Fund of Shandong Key Laboratory of Civil Engineering Disaster Prevention and Mitigation (CDPM2021KF21).
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Article Highlights
• Two asymmetric types of WEC-FBs, trapezoid type and L type, are studied and compared.
• The effects of PTO damping coefficient, wave periods, and draft/displacement are analyzed.
• Two force parameters are introduced as a criterion for geometry optimization.
• The two types of floating breakwaters are suitable for a certain range of wave periods.
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Ji, Q., Chen, G., Xu, Y. et al. Hydrodynamic Performance of Two Types of Floating Breakwaters Integrated With a Wave Energy Converter. J. Marine. Sci. Appl. (2024). https://doi.org/10.1007/s11804-024-00431-4
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DOI: https://doi.org/10.1007/s11804-024-00431-4