Numerical Investigation and Parametric Optimization of Novel Dual-Pontoon Breakwater with Arc-Shaped Plate

Wenhe Lu, Xiao Liu, Haoyi Wang, Guocheng Lu, Zhenni Guo, Hao Zha and Nan Shao ()
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Wenhe Lu: China Renewable Energy Engineering Institute, Beijing 100120, China
Xiao Liu: China Renewable Energy Engineering Institute, Beijing 100120, China
Haoyi Wang: China Renewable Energy Engineering Institute, Beijing 100120, China
Guocheng Lu: China Renewable Energy Engineering Institute, Beijing 100120, China
Zhenni Guo: China Renewable Energy Engineering Institute, Beijing 100120, China
Hao Zha: China Renewable Energy Engineering Institute, Beijing 100120, China
Nan Shao: State Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation, Tianjin University, Tianjin 300350, China

Energies, 2025, vol. 18, issue 16, 1-24

Abstract: To enhance the hydrodynamic stability of offshore floating photovoltaic (OFPV) platforms under complex sea conditions, this study proposes a novel arc-plate dual-pontoon floating breakwater. A combined methodology of experimental investigation and numerical simulation was integrated to systematically study its hydrodynamic responses and attenuation performance. A two-dimensional numerical wave flume was established in FLOW-3D, and the results were validated against experimental data. The results reveal that the wave energy reduction is primarily achieved through the wave reflection in front of the pontoons and turbulence-induced dissipation guided by the arc plate. The effects of key structural parameters (pontoon draft depth, arc plate span, and the relative freeboard height) were studied to optimize its performance. The results show that both the increasing draft depth and arc plate span can significantly improve the attenuation under long-period waves. Additionally, higher relative freeboard heights help to reduce both the transmission coefficient and horizontal wave force, with the optimal value identified as 0.7. The findings suggest theoretical insights and possible indications for the design of the floating breakwater system in offshore renewable energy applications.

Keywords: offshore floating photovoltaic (OFPV); floating breakwater; hydrodynamic performance; wave energy attenuation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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