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Numerical analysis on a self-rectifying impulse turbine with U-shaped duct for oscillating water column wave energy conversion

Author

Listed:
  • Guo, Peng
  • Zhang, Yongliang
  • Chen, Wenchuang

Abstract

In this paper, a novel self-rectifying impulse turbine with U-shaped duct used for oscillating water column wave energy conversion is proposed. It has a pair of fixed, symmetrical and radial-flow guide vane rows, and an axisymmetric, U-shaped duct with increasing cross-sectional area from the rotor to the guide vane rows, therefore it is expected to be relatively simple, reliable and efficient. A three-dimensional (3D) steady-state numerical model and a fully transient model are established for the present turbine. These two models are validated by comparison with experimental results from the published works, respectively, and then used to investigate the steady performance and transient characteristics of the impulse turbine. Effect of the geometry of the guide vanes, the number of the guide vanes, and the hub-to-tip ratio on turbine performance under steady airflows and transient airflows are studied, and the difference between these two models in predicting turbine performance is discussed.

Suggested Citation

  • Guo, Peng & Zhang, Yongliang & Chen, Wenchuang, 2023. "Numerical analysis on a self-rectifying impulse turbine with U-shaped duct for oscillating water column wave energy conversion," Energy, Elsevier, vol. 274(C).
    • Handle: RePEc:eee:energy:v:274:y:2023:i:c:s0360544223007533
    DOI: 10.1016/j.energy.2023.127359
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    References listed on IDEAS

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    Cited by:

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    3. Xie, Weixin & Chen, Wenchuang & Huang, Wei & Huang, Luofeng, 2025. "Enhancing wave energy conversion in oscillating water column devices using breather valve-based pneumatic regulation: A CFD study," Energy, Elsevier, vol. 340(C).
    4. Bian, Qizhi & Dong, Xiaochen & Xu, Chuanli & Liu, Zhen & Ding, Lei, 2025. "Hydrodynamic and power-capturing performances of the dual-tube oscillating water column device: A numerical study," Energy, Elsevier, vol. 336(C).
    5. He, Yikuan & Zhang, Yongliang, 2025. "The synergy between the backward bent duct buoy and the floating platform," Renewable Energy, Elsevier, vol. 253(C).
    6. Yang, Huanbin & Zhang, Yongliang & Luo, Ping & Guo, Peng & Xu, Haochun & Wang, Chen & He, Yikuan, 2026. "Physical model tests of Backward Bent Duct Buoy: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 226(PC).
    7. Xu, Haochun & Zhang, Yongliang & Wang, Chen, 2025. "Energy conversion performance of a floating wave energy converter array composed of backward bent duct buoys," Energy, Elsevier, vol. 324(C).
    8. Yang, Huanbin & Zhang, Yongliang, 2025. "Numerical study on a novel backward bent duct buoy wave energy converter with ‘ducktail’ deflector," Renewable Energy, Elsevier, vol. 251(C).
    9. Xu, Haochun & Zhang, Yongliang & Wang, Chen & Yang, Huanbin, 2025. "Numerical study on aerodynamic and hydrodynamic load characteristics of a floating pneumatic wave energy converter under real sea conditions," Energy, Elsevier, vol. 314(C).
    10. Xu, Haochun & Zhang, Yongliang & Guo, Peng, 2025. "Effect of various motion modes on the performance of a floating pneumatic wave energy converter with a backward bent duct," Renewable and Sustainable Energy Reviews, Elsevier, vol. 217(C).
    11. Yang, Shaohui & Zhu, Wenzheng & Tu, Yongqiang & Cao, Gengning & Chen, Xiaokun & Du, Zhichang & Fan, Jianyu & Huang, Yan, 2024. "Study on the influence of heave plate on energy capture performance of central pipe oscillating water column wave energy converter," Energy, Elsevier, vol. 312(C).
    12. Xu, Haochun & Zhang, Yongliang & Wang, Chen & Yang, Huanbin, 2025. "Numerical investigation on a floating multi-chamber pneumatic wave energy conversion device with three sub-units," Applied Energy, Elsevier, vol. 394(C).

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