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Hydrodynamic Investigation of a Dual-Cylindrical OWC Wave Energy Converter Integrated into a Fixed Caisson Breakwater

Author

Listed:
  • Chang Wan

    (College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China)

  • Can Yang

    (College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China
    College of Transportation Engineering, Dalian Maritime University, Dalian 116026, China)

  • Qinghe Fang

    (Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China)

  • Zaijin You

    (College of Transportation Engineering, Dalian Maritime University, Dalian 116026, China)

  • Jing Geng

    (College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China)

  • Yongxue Wang

    (State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology (DUT), Dalian 116024, China)

Abstract

A fixed dual cylindrical oscillating water column (OWC) acting as a breakwater-type wave energy converter (WEC) is proposed to harvest the wave energy effectively for shallow offshore sites. An analytical model is developed to investigate the hydrodynamic characteristics and the energy capture capacity of the cylindrical OWC device in severe waves. Based on the linear potential flow theory, the analytical solutions of the velocity potential in diffraction mode are solved by matching the Eigen-function expansion technique, and the continuous conditions of the velocity potential and fluid velocity between the computational sub-domains are involved in solving the problem for determining a solution. The proposed model is verified against the published data. The effects of the wave height, the angle of chamber clapboard and the radius of the inner and outer cylindrical column on the energy conversion efficiency are investigated in this paper. To improve the energy conversion performance and obtain a faster prediction for structural optimization of the cylindrical OWC, the geometrical parameters are further discussed in the analytical model. The results indicate that the geometrical parameters of the chamber have significant effects on the wave energy absorption efficiency. It is found that the effective frequency bandwidth of the dual cylindrical column can be broadened by improving the angle of the chamber clapboard and the inner–outer cylinder diameter ratio.

Suggested Citation

  • Chang Wan & Can Yang & Qinghe Fang & Zaijin You & Jing Geng & Yongxue Wang, 2020. "Hydrodynamic Investigation of a Dual-Cylindrical OWC Wave Energy Converter Integrated into a Fixed Caisson Breakwater," Energies, MDPI, vol. 13(4), pages 1-16, February.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:4:p:896-:d:321822
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    References listed on IDEAS

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    1. Falcão, António F.O. & Henriques, João C.C., 2016. "Oscillating-water-column wave energy converters and air turbines: A review," Renewable Energy, Elsevier, vol. 85(C), pages 1391-1424.
    2. Doyle, Simeon & Aggidis, George A., 2019. "Development of multi-oscillating water columns as wave energy converters," Renewable and Sustainable Energy Reviews, Elsevier, vol. 107(C), pages 75-86.
    3. Henriques, J.C.C. & Portillo, J.C.C. & Sheng, W. & Gato, L.M.C. & Falcão, A.F.O., 2019. "Dynamics and control of air turbines in oscillating-water-column wave energy converters: Analyses and case study," Renewable and Sustainable Energy Reviews, Elsevier, vol. 112(C), pages 571-589.
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    Cited by:

    1. Doyle, Simeon & Aggidis, George A., 2021. "Experimental investigation and performance comparison of a 1 single OWC, array and M-OWC," Renewable Energy, Elsevier, vol. 168(C), pages 365-374.
    2. Mayon, Robert & Ning, Dezhi & Zhang, Chongwei & Chen, Lifen & Wang, Rongquan, 2021. "Wave energy capture by an omnidirectional point sink oscillating water column system," Applied Energy, Elsevier, vol. 304(C).
    3. Iván López & Rodrigo Carballo & David Mateo Fouz & Gregorio Iglesias, 2021. "Design Selection and Geometry in OWC Wave Energy Converters for Performance," Energies, MDPI, vol. 14(6), pages 1-18, March.
    4. Cristian Napole & Oscar Barambones & Mohamed Derbeli & José Antonio Cortajarena & Isidro Calvo & Patxi Alkorta & Pablo Fernandez Bustamante, 2021. "Double Fed Induction Generator Control Design Based on a Fuzzy Logic Controller for an Oscillating Water Column System," Energies, MDPI, vol. 14(12), pages 1-19, June.

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