A novel integrated system of wave-current attenuation device and triboelectric nanogenerator with an aim to harness blue energy and provide protection
Xie C. Guo H. Li X. Wu Z. Hu Y. Peng L. Garg A. Mei G.
1 June 2025Elsevier Ltd
Energy
2025#324
The integration of wave energy converters (WECs) with floating breakwaters is a well-established strategy to enhance cost-effectiveness and improve efficiency (United Nations (UN) Sustainable Development Goals). However, the potential for integrating triboelectric nanogenerators (TENGs) with floating breakwaters remains to be explored. This study proposes a novel integrated system that combines a floating wave-current attenuation device with a TENG, thereby addressing this research gap. The effects of draft depth, wave-facing area, and mooring cable tension on the electricity generation, hydrodynamic response, and protective effect of an integrated system under wave-current excitation were thoroughly studied in a large wave-current flume. Furthermore, particle image velocimetry (PIV) technology was utilized to measure current velocity and field variations in a designated area behind the integrated system, allowing for the observation of water particle motion trajectories. The findings indicate that the integrated system not only excels in electrical output characteristics but also demonstrates favorable hydrodynamic properties. The system exhibits commendable turbulence performance, with a current transmission coefficient of approximately 0.50 for the wave-facing area. Additionally, the integrated system significantly reduces the motion response of the protected structure compared to scenarios without it. This study validates the performance and feasibility of integrating TENGs with floating wave-current attenuation devices.
Electrical output characteristics , Floating wave-current attenuation device , Hydrodynamic performance , Integrated system , Triboelectric nanogenerator
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Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi Key Laboratory of Disaster Prevention and Structural Safety, College of Civil Engineering and Architecture, Guangxi University, Nanning, 530004, China
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, 116024, China
Guangxi Road and Bridge Engineering Group Co., Ltd., Nanning, 530200, China
Guangdong Engineering Center for Structure Safety and Health Monitoring, Shantou University, Shantou, 515000, China
L.N Gumilyov Eurasian National University, Astana, 010000, Kazakhstan
Ocean College, Zhejiang University, Zhoushan, 316021, China
Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education
State Key Laboratory of Coastal and Offshore Engineering
Guangxi Road and Bridge Engineering Group Co.
Guangdong Engineering Center for Structure Safety and Health Monitoring
L.N Gumilyov Eurasian National University
Ocean College
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