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Numerical and Experimental Investigation on a Moonpool-Buoy Wave Energy Converter

Author

Listed:
  • Hengxu Liu

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

  • Feng Yan

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

  • Fengmei Jing

    (School of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 100083, China)

  • Jingtao Ao

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

  • Zhaoliang Han

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

  • Fankai Kong

    (College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, China)

Abstract

This paper introduces a new point-absorber wave energy converter (WEC) with a moonpool buoy—the moonpool platform wave energy converter (MPWEC). The MPWEC structure includes a cylinder buoy and a moonpool buoy and a Power Take-off (PTO) system, where the relative movement between the cylindrical buoy and the moonpool buoy is exploited by the PTO system to generate energy. A 1:10 scale model was physically tested to validate the numerical model and further prove the feasibility of the proposed system. The motion responses of and the power absorbed by the MPWEC studied in the wave tank experiments were also numerically analyzed, with a potential approach in the frequency domain, and a computational fluid dynamics (CFD) code in the time domain. The good agreement between the experimental and the numerical results showed that the present numerical model is accurate enough, and therefore considering only the heave degree of freedom is acceptable to estimate the motion responses and power absorption. The study shows that the MPWEC optimum power extractions is realized over a range of wave frequencies between 1.7 and 2.5 rad/s.

Suggested Citation

  • Hengxu Liu & Feng Yan & Fengmei Jing & Jingtao Ao & Zhaoliang Han & Fankai Kong, 2020. "Numerical and Experimental Investigation on a Moonpool-Buoy Wave Energy Converter," Energies, MDPI, vol. 13(9), pages 1-16, May.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:9:p:2364-:d:355787
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    References listed on IDEAS

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    1. Wan, Ling & Gao, Zhen & Moan, Torgeir & Lugni, Claudio, 2016. "Experimental and numerical comparisons of hydrodynamic responses for a combined wind and wave energy converter concept under operational conditions," Renewable Energy, Elsevier, vol. 93(C), pages 87-100.
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    Cited by:

    1. Liang Shangguan & Kuan Lu & Huamei Wang, 2023. "Research on Laboratory Test Method of Wave Energy Converter Wave-Wire Conversion Ratio in Irregular Waves," Energies, MDPI, vol. 16(2), pages 1-13, January.
    2. Tay, Zhi Yung, 2022. "Energy generation enhancement of arrays of point absorber wave energy converters via Moonpool's resonance effect," Renewable Energy, Elsevier, vol. 188(C), pages 830-848.
    3. Zhang, Yongxing & Huang, Zhicong & Zou, Bowei & Bian, Jing, 2023. "Conceptual design and analysis for a novel parallel configuration-type wave energy converter," Renewable Energy, Elsevier, vol. 208(C), pages 627-644.
    4. Dongsheng Qiao & Rizwan Haider & Jun Yan & Dezhi Ning & Binbin Li, 2020. "Review of Wave Energy Converter and Design of Mooring System," Sustainability, MDPI, vol. 12(19), pages 1-31, October.

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