IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v323y2025ics0360544225015117.html
   My bibliography  Save this article

Hydrodynamics performance and dynamic analyses of a low-frequency broadband heaving WEC-type breakwater with customized tri-stable restoring force: A 2D numerical study

Author

Listed:
  • Bao, Jian
  • Qu, Ming
  • Xu, Zhigang
  • Yu, Dingyong
  • Xu, Peng
  • Chen, Yuanjie

Abstract

Aiming to broaden the low-frequency operational bandwidth of an oscillating buoy wave energy converter-floating breakwater integrated system (OB WEC-FB), the double snap-through mechanism is utilized to change its linear response to a tri-stable one. The corresponding tri-stable restoring force-displacement curve are first designed to be adjustable based on the coordinates of equilibrium points. Then, the effects of equilibrium positions, spring stiffness, damping coefficient, and wave amplitude on the operational characteristics of a tri-stable floater are investigated in a two-dimensional fully-nonlinear numerical wave tank. The results show that a well-designed double snap-through mechanism can effectively lower the resonance frequency of floater and excite its large-amplitude inter-well oscillation under the action of low-frequency waves. The resulting tri-stable floater significantly outperforms its linear counterparts on both harvesting low-frequency wave energy and attenuating long waves. In addition, the underlying mechanism of coupling nonlinearity between the wave-structure interaction and nonlinear motion states is explored in detail. This paper indicates the potential of a customized tri-stable mechanism in simultaneously enhancing power absorption and wave attenuation at low frequencies and provides a valuable scheme for solving the problem of narrow operational bandwidth of OB WEC-FB.

Suggested Citation

  • Bao, Jian & Qu, Ming & Xu, Zhigang & Yu, Dingyong & Xu, Peng & Chen, Yuanjie, 2025. "Hydrodynamics performance and dynamic analyses of a low-frequency broadband heaving WEC-type breakwater with customized tri-stable restoring force: A 2D numerical study," Energy, Elsevier, vol. 323(C).
    • Handle: RePEc:eee:energy:v:323:y:2025:i:c:s0360544225015117
    DOI: 10.1016/j.energy.2025.135869
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544225015117
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2025.135869?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:s0360544225015117. 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.