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Open AccessArticle

Hydrodynamic Performance of Rectangular Heaving Buoys for an Integrated Floating Breakwater

by 1, 2 and 1,2,3,*
1
Shandong Provincial Key Laboratory of Ocean Engineering, Ocean University of China, Qingdao 266100, China
2
Qingdao Municipal Key Laboratory of Ocean Renewable Energy, Ocean University of China, Qingdao 266100, China
3
Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266061, China
*
Author to whom correspondence should be addressed.
J. Mar. Sci. Eng. 2019, 7(8), 239; https://doi.org/10.3390/jmse7080239
Received: 13 July 2019 / Revised: 13 July 2019 / Accepted: 20 July 2019 / Published: 24 July 2019
(This article belongs to the Special Issue Advances in Ocean Wave Energy Conversion)
Recently, the integrated development of wave energy converters and breakwaters has become popular, moving from traditional passive wave absorption to active energy capture. In this study, rectangular heaving buoys are considered as floating breakwater modules to absorb wave energy. A numerical wave tank is established based on Reynolds Averaged Navier-Stokes equation and User-Define-Function in ANSYS-Fluent commercial software. The numerical results show that incident wave conditions and submerged depth have significant effects on the heaving performance and wave energy absorption of a rectangular buoy. Flow structures around the buoy are shown to exhibit flow separations and vortex shedding, which can provide more information on buoy optimization. Power take-off (PTO) reaction forces are assumed to be a linear function of the translation velocities of the buoy. Numerical results demonstrate that a suitable PTO module can improve the wave power absorption by up to 34.2% for certain buoy and wave conditions, which is valuable for further investigations. View Full-Text
Keywords: wave energy conversion; heaving buoy; Reynolds-Averaged Navier-Stokes equations; numerical wave tank; hydrodynamic performance; power take-off wave energy conversion; heaving buoy; Reynolds-Averaged Navier-Stokes equations; numerical wave tank; hydrodynamic performance; power take-off
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MDPI and ACS Style

Zhang, X.; Zeng, Q.; Liu, Z. Hydrodynamic Performance of Rectangular Heaving Buoys for an Integrated Floating Breakwater. J. Mar. Sci. Eng. 2019, 7, 239. https://doi.org/10.3390/jmse7080239

AMA Style

Zhang X, Zeng Q, Liu Z. Hydrodynamic Performance of Rectangular Heaving Buoys for an Integrated Floating Breakwater. Journal of Marine Science and Engineering. 2019; 7(8):239. https://doi.org/10.3390/jmse7080239

Chicago/Turabian Style

Zhang, Xiaoxia; Zeng, Qiang; Liu, Zhen. 2019. "Hydrodynamic Performance of Rectangular Heaving Buoys for an Integrated Floating Breakwater" J. Mar. Sci. Eng. 7, no. 8: 239. https://doi.org/10.3390/jmse7080239

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