IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v323y2025ics0360544225014112.html
   My bibliography  Save this article

Resonance assessment of a hydrofoil by considering hydrodynamic damping ratio under continuously varying inlet velocity

Author

Listed:
  • Zeng, Y.S.
  • Qian, Z.H.
  • Yao, Z.F.
  • Wu, Q.
  • Shi, J.T.
  • Zhang, Z.Y.
  • Luo, X.W.

Abstract

The variable-speed operation of pumped-storage units increases the resonance risk of blade-like structures. In this study, the blade was simplified to a hydrofoil, with a focus on the hydrodynamic damping ratio (HDR) and vibration behaviors near the resonance velocity (vr), based on experiments and simulations. Four variable velocity processes were applied as inlet boundary conditions in the computational domain, and the results indicated that the Strouhal number remained nearly unchanged. A very interesting resonance of the flow field was captured when the vibration frequency of the hydrofoil coincided with the vortex shedding frequency, resulting in the pressure pulsation increasing to 2.34 times. A sudden drop in HDR was observed near vr, with the flow mechanism explained as a reduction in the normal force acting on the hydrofoil. Subsequently, a one-way fluid-structure interaction (FSI) strategy for resonance assessment was developed, considering fluid-added mass and HDR. The vr was calculated with an error of 2.42 % by comparing it to the experimental data, and both the deformation and equivalent stress at vr were quantitatively determined. This study enhances the understanding of vortex shedding and HDR characteristics during resonance, providing an effective strategy for assessing resonance risks in blade-like structures.

Suggested Citation

  • Zeng, Y.S. & Qian, Z.H. & Yao, Z.F. & Wu, Q. & Shi, J.T. & Zhang, Z.Y. & Luo, X.W., 2025. "Resonance assessment of a hydrofoil by considering hydrodynamic damping ratio under continuously varying inlet velocity," Energy, Elsevier, vol. 323(C).
    • Handle: RePEc:eee:energy:v:323:y:2025:i:c:s0360544225014112
    DOI: 10.1016/j.energy.2025.135769
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544225014112
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2025.135769?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:energy:v:323:y:2025:i:c:s0360544225014112. 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/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.