Semi-analytical study on the hydrodynamic performance of an interconnected floating breakwater-WEC system in presence of the seawall. (April 2021)

• Record Type: Journal Article
• Authors: Zhao, Xuanlie; Du, Xin; Li, Mingwei; Göteman, Malin
• Is Part Of: Applied ocean research. Volume 109(2021)
• Publication Date: 2021-04
• Subjects: Analytical investigation -- Coastal reflection -- Wave energy converter -- Floating breakwater -- Interconnected floats; Ocean engineering -- Periodicals; 620.416205
• DOI: 10.1016/j.apor.2021.102555
• Languages: English
• ISSNs: 0141-1187

Abstract

Highlights: A semi-analytical model for the dual pontoon system with the presence of the partial reflected seawall was developed. Hydrodynamic performance of the interconnected floating breakwater-WEC system was analyzed theoretically. The effect of the seawall on the performance of the system was revealed. Abstracts: Based on linear potential flow theory, a semi-analytical model is developed using the matching eigenfunction method for a dual pontoon system in the presence of partially reflective seawall. To study the motion characteristics of an interconnected floating breakwater-wave energy converter system, the equations of motion in the frequency-domain are studied using the Lagrange-multiplier method. The model is verified using wave flux conservation law. A thorough investigation of the hydrodynamic performance of the integrated system is conducted, and the optimal power take-off damping of the system is derived theoretically. The results show that the proposed system exhibits a qualified wave power extraction performance and wave attenuation performance, and the presence of the seawall affects the performance of the integrated system significantly.