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http://dx.doi.org/10.7734/COSEIK.2022.35.2.109

Parametric Study on Effect of Floating Breakwater for Offshore Photovoltaic System in Waves  

Kim, Hyun-Sung (Ship and Ocean Engineering, University of Science and Technology)
Kim, Byoung Wan (Offshore Platform Research Division, Korea Research Institute of Ships and Ocean Engineering)
Lee, Kangsu (Offshore Platform Research Division, Korea Research Institute of Ships and Ocean Engineering)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.35, no.2, 2022 , pp. 109-117 More about this Journal
Abstract
There has been an increasing number of studies on photovoltaic energy generation system in an offshore site with the largest energy generation efficiency, as increasing the researches and developments of renewable energies for use of offshore space and resources to replace existing fossil fuels and resolve environmental challenges. For installation and operation of floating photovoltaic systems in an offshore site with harsher environmental conditions, a stiffness of structural members comprising the total system must be reinforced to inland water spaces as dams, reservoirs etc., which have relatively weak condition. However, there are various limitations for the reinforcement of structural stiffness of the system, including producible size, total mass of the system, economic efficiency, etc. Thus, in this study, a floating breakwater is considered for reducing wave loads on the system and minimizing the reinforcement of the structural members. Wave reduction performances of floating breakwaters are evaluated, considering size and distance to the system. The wave loads on the system are evaluated using the higher-order boundary element method (HOBEM), considering the multi-body effect of buoys. Stresses on structural members are assessed by coupled analyses using the finite element method (FEM), considering the wave loads and hydrodynamic characteristics. As the maximum stresses on each of the cases are reviewed and compared, the effect of floating breakwater for floating photovoltaic system is checked, and it is confirmed that the size of breakwater has a significant effect on structural responses of the system.
Keywords
floating photovoltaic system; floating breakwater; coupled analysis; wave load reduction;
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  • Reference
1 Zhang, H., Zhou, B., Vogel, C., Willden, R., Zang, J., Geng, J. (2020) Hydrodynamic Performance of a Dual-Floater Hybrid System Combining a Floating Breakwater and an Oscillating-Buoy Type Wave Energy Converter, Appl. Energy, 259, p.114212.   DOI
2 Chung, J., Hulbert, G.M. (1993) A Time Integration Algorithm for Structural Dynamics with Improved Numerical Dissipation: The Generalized-α Method, J. Appl. Mech., 60(2), pp.371~375.   DOI
3 He, F., Huang, Z., Law, A.W.K. (2012) Hydrodynamic Performance of a Rectangular Floating Breakwater With and Without Pneumatic Chambers: An Experimental Study, Ocean Eng., 51, pp.16~27.   DOI
4 Kim, B.W., Sung, H.G., Kim, J.H., Hong, S.Y. (2013) Comparison of Linear Spring and Nonlinear FEM Methods in Dynamic Coupled Analysis of Floating Structure and Mooring System, J. Fluid& Struct., 42, pp.205~227.   DOI
5 Sutko, A.A., Haden, E.L. (1974) The Effect of Surge, Heave and Pitch on the Performance of a Floating Breakwter, Floating Breakwaters Conference Papers, University of Rhode Island, Marine Technical Report Series, 24, pp.21~39.
6 Zhang, C., Magee, A.R. (2021) Effectiveness of Floating Breakwater in Special Configurations for Protecting Nearshore Infrastructures, J. Mar. Sci. & Eng., 9(7), p.785.   DOI
7 Hales, L.Z. (1981) Floating Breakwaters: State-of-the-Art, Literature Review, US Army-CERC Technical Report, 81-1.
8 Bathe, K.J. (1996) Finite Element Procedures, Prentice Hall.
9 Choi, Y.R., Hong, S.Y., Choi, H.S. (2000) An Analysis of Second-order Wave Forces on Floating Bodies by Using a Higher-Order Boundary Element Method, Ocean Eng., 28(1), pp.117~138.   DOI
10 Federiksen, H.D. (1971) Wave Attenuation by Fluid Filled Bags, J. Waterw., Harb. & Coast. Eng. Div., 97(1), pp.73~90.   DOI
11 Hong, S.Y., Kim, J.H., Cho, S.K., Choi, Y.R., Kim, Y.S. (2005) Numerical and Experimental Study on Hydrodynamic Interaction of Side-by-side Moored Multiple Vessels, Ocean Eng., 32(7), pp.783~801.   DOI
12 Western Canada Hydraulic Laboratories Ltd. (1981) Development of a Manual for the Design of Floating Breakwaters, Canadian Manuscript Report of Fisheries and Aquatic Sciences, p.1629.
13 Jeong, S.T., Park, W.S., L ee, H.C. (2002) Finite Element Analysis for Multiple Floating Breakwaters, J. Korean Soc, Coast, & Ocean Eng., 14(4), pp.257~264.
14 Loukogeorgaki, E., Yagci, O., Kabdasli, M.S. (2014) 3D Experimental Investigation of the Structural Response and the Effectiveness of a Moored Floating Breakwater with Flexibly Connected Modules, Coast. Eng., 91, pp.164~180.   DOI
15 McCartney, B.L. (1985) Floating Breakwater Design, J. Waterway, Port, Coast., & Ocean Eng., 111(2), pp.304~318.   DOI
16 Williams, A.N., Abul-Azm, A.G. (1997) Dual Pontoon Floating Breakwater, Ocean Eng., 24(5), pp.465~478.   DOI