IDEAS home Printed from https://ideas.repec.org/a/eee/renene/v248y2025ics096014812500789x.html
   My bibliography  Save this article

Wave effects on energy-harvesting performance of flapping hydrofoil

Author

Listed:
  • Qu, Hengliang
  • Li, Xueyan
  • Dong, Xiaochen

Abstract

A two-dimensional (2D) wave-current numerical flume and fully activated hydrofoil numerical model were established to investigate the effects of traveling waves on the energy-harvesting performance of a flapping hydrofoil tidal current energy (TCE) device. The hydrodynamic and energy-harvesting performances of the hydrofoil were investigated under various conditions, including wave heights (0–1.8 times the chord length), pitching amplitudes (40°–80°), submerged depths (3–18 times the chord length), and frequency ratios (0.5–1.5). To reveal the underlying mechanisms of the wave effects, the flow field structures, hydrodynamic lift and torque were analyzed, along with energy-harvesting performance. Both the efficiency and power coefficient increased with increasing wave height and decreasing submerged depth. Compared with other frequency ratios, the hydrofoil achieved optimal energy harvesting efficiency across a broad range of pitching amplitudes when the frequency ratio was 1.0. Maximum efficiency and power coefficient values of 0.42 and 1.02, respectively, were obtained when the wave height was 1.8 times the chord length, submersion depth was 3 times the chord length, and pitching amplitude was 60°. Base on the water particle velocity distribution in the wave theory, the enhanced energy-harvesting performance is primarily attributable to the increased angle of attack induced by wave effects.

Suggested Citation

  • Qu, Hengliang & Li, Xueyan & Dong, Xiaochen, 2025. "Wave effects on energy-harvesting performance of flapping hydrofoil," Renewable Energy, Elsevier, vol. 248(C).
    • Handle: RePEc:eee:renene:v:248:y:2025:i:c:s096014812500789x
    DOI: 10.1016/j.renene.2025.123127
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S096014812500789X
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.renene.2025.123127?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:renene:v:248:y:2025:i:c:s096014812500789x. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/renewable-energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.