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Open AccessArticle

Study on the Optimal Wave Energy Absorption Power of a Float in Waves

1
School of Naval Architecture and Ocean Engineering, Harbin Institute of Technology, Weihai 264209, China
2
Institute of Ship and Ocean Engineering Hydrodynamics, Shandong Institute of Shipbuilding Technology, Weihai 264209, China
3
Tianjin Research Institute for Water Transport Engineering, M.O.T., Tianjin 300456, China
4
College of Engineering, Ocean University of China, Qingdao 266100, China
*
Author to whom correspondence should be addressed.
J. Mar. Sci. Eng. 2019, 7(8), 269; https://doi.org/10.3390/jmse7080269
Received: 6 July 2019 / Revised: 10 August 2019 / Accepted: 10 August 2019 / Published: 13 August 2019
The utilization of ocean renewable energy, especially wave energy, is of great significance in ocean engineering. In this study, a three-dimensional numerical wave tank was established to simulate the wave-float interaction based on the Reynolds-averaged Navier–Stokes equations and the Realizable K-Epsilon Two-Layer turbulence model was applied. Firstly, convergence studies with respect to the mesh and time step were carried out and confirmed by the published analytical and numerical data. Then, the resonance condition of a particular float was solved by both numerical and analytical methods. The numerical and the analytical results are mutually verified in good agreements, which verify the reliability of the analytical process. Furthermore, a wave energy converter (WEC) consisting of a single float without damping constant was adopted, and its hydrodynamic performance in different wave conditions was investigated. It was found that the damping factor can affect the motion response of the float and the wave force it receives. Under a certain wavelength condition, the WEC resonates with the wave, at which the wave force on the float, displacement of the float and other parameters reach a maximum value. Finally, the influence of linear damping constant on the power take-off (PTO) was studied. The results show that the damping factor does not affect the wave number turning point of the optimal damping constant. View Full-Text
Keywords: damping constant; resonance; power generation; wave energy; hydrodynamic analysis; numerical wave tank damping constant; resonance; power generation; wave energy; hydrodynamic analysis; numerical wave tank
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MDPI and ACS Style

Luan, Z.; He, G.; Zhang, Z.; Jing, P.; Jin, R.; Geng, B.; Liu, C. Study on the Optimal Wave Energy Absorption Power of a Float in Waves. J. Mar. Sci. Eng. 2019, 7, 269. https://doi.org/10.3390/jmse7080269

AMA Style

Luan Z, He G, Zhang Z, Jing P, Jin R, Geng B, Liu C. Study on the Optimal Wave Energy Absorption Power of a Float in Waves. Journal of Marine Science and Engineering. 2019; 7(8):269. https://doi.org/10.3390/jmse7080269

Chicago/Turabian Style

Luan, Zhengxiao; He, Guanghua; Zhang, Zhigang; Jing, Penglin; Jin, Ruijia; Geng, Baolei; Liu, Chaogang. 2019. "Study on the Optimal Wave Energy Absorption Power of a Float in Waves" J. Mar. Sci. Eng. 7, no. 8: 269. https://doi.org/10.3390/jmse7080269

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