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Design and Numerical Analysis of a Novel Counter-Rotating Self-Adaptable Wave Energy Converter Based on CFD Technology

Author

Listed:
  • Chongfei Sun

    (College of Mechatronics and Automation, National University of Defense Technology, Changsha 410073, China)

  • Zirong Luo

    (College of Mechatronics and Automation, National University of Defense Technology, Changsha 410073, China)

  • Jianzhong Shang

    (College of Mechatronics and Automation, National University of Defense Technology, Changsha 410073, China)

  • Zhongyue Lu

    (College of Mechatronics and Automation, National University of Defense Technology, Changsha 410073, China)

  • Yiming Zhu

    (School of Mechanical, Aerospace and Civil Engineering, University of Manchester, Manchester M17JR, UK)

  • Guoheng Wu

    (College of Mechatronics and Automation, National University of Defense Technology, Changsha 410073, China)

Abstract

The lack of an efficient and reliable power supply is currently one of the bottlenecks restricting the practical application of unmanned ocean detectors. Wave energy is the most widely distributed ocean energy, with the obvious advantages of high energy density and predictability. In this paper, a novel wave energy converter (WEC) for power supply of low-power unmanned ocean detectors is proposed, which is a small-scale counter-rotating self-adaptive point absorber-type WEC. The double-layer counter-rotating absorbers can achieve the torque balance of the whole device. Besides, the self-adaptation of the blade to the water flow can maintain a unidirectional continuous rotation of the single-layer absorber. The WEC has several advantages, including small occupied space, simple exchange process and convenient modular integration. It is expected to meet the power demand of low-power ocean detectors. Through modeling and CFD analysis, it was found that the power and efficiency characteristics of WEC are greatly influenced by the relative flow velocity, the blade angle of the absorber and the interaction between the upper and lower absorbers. A physical prototype of the WEC was made and some related experiments were conducted to verify the feasibility of WEC working principle and the reliability of CFD analysis.

Suggested Citation

  • Chongfei Sun & Zirong Luo & Jianzhong Shang & Zhongyue Lu & Yiming Zhu & Guoheng Wu, 2018. "Design and Numerical Analysis of a Novel Counter-Rotating Self-Adaptable Wave Energy Converter Based on CFD Technology," Energies, MDPI, vol. 11(4), pages 1-21, March.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:4:p:694-:d:137230
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    References listed on IDEAS

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    Cited by:

    1. Changlei Wang & Zirong Luo & Zhongyue Lu & Jianzhong Shang & Mangkuan Wang & Yiming Zhu, 2022. "Design and CFD Analysis of the Energy Efficiency of a Point Wave Energy Converter Using Passive Morphing Blades," Energies, MDPI, vol. 16(1), pages 1-14, December.
    2. Ángel M. Costa & Rebeca Bouzón & Diego Vergara & José A. Orosa, 2019. "Eco-friendly Pressure Drop Dehumidifier: An Experimental and Numerical Analysis," Sustainability, MDPI, vol. 11(7), pages 1-17, April.
    3. Dongsheng Cong & Jianzhong Shang & Zirong Luo & Chongfei Sun & Wei Wu, 2018. "Energy Efficiency Analysis of Multi-Type Floating Bodies for a Novel Heaving Point Absorber with Application to Low-Power Unmanned Ocean Device," Energies, MDPI, vol. 11(12), pages 1-20, November.
    4. Wang, Mangkuan & Shang, Jianzhong & Luo, Zirong & Lu, Zhongyue & Yao, Ganzhou, 2023. "Theoretical and numerical studies on improving absorption power of multi-body wave energy convert device with nonlinear bistable structure," Energy, Elsevier, vol. 282(C).
    5. Xiao, Han & Liu, Zhenwei & Zhang, Ran & Kelham, Andrew & Xu, Xiangyang & Wang, Xu, 2021. "Study of a novel rotational speed amplified dual turbine wheel wave energy converter," Applied Energy, Elsevier, vol. 301(C).
    6. Xiao, Han & Wang, Xu, 2024. "Sensitivity analysis of design parameters and their interactions and performance prediction of a novel twin turbine wave energy converter," Energy, Elsevier, vol. 293(C).

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