IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v18y2025i7p1870-d1629743.html
   My bibliography  Save this article

Study on the Wake Characterization of a Horizontal-Axis Tidal Stream Turbine Utilizing a PIV System in a Large Circulating Water Tunnel

Author

Listed:
  • Sejin Jung

    (Korea Institute of Ocean Science and Technology, Busan Metropolitan City 49111, Republic of Korea
    These authors contributed equally to this work.)

  • Heebum Lee

    (Renewable Energy Engineering Section, Korea Hydro & Nuclear Power Co., Ltd., Daejeon 34101, Republic of Korea
    These authors contributed equally to this work.)

  • Dasom Jeong

    (Department of Mechanical System Engineering, Jeju National University, Jeju 63243, Republic of Korea)

  • Jihoon Kim

    (Korea Institute of Ocean Science and Technology, Busan Metropolitan City 49111, Republic of Korea)

  • Jin Hwan Ko

    (Department of Mechanical System Engineering, Jeju National University, Jeju 63243, Republic of Korea)

Abstract

In this study, a particle image velocimetry (PIV) system was used in a large circulating water tank to investigate the wake of a horizontal-axis tidal turbine model, focusing on minor blockage effects and scale influence. A wake map of the turbine was constructed based on PIV measurements, using velocity deficit, turbulence intensity (TI), and turbulence kinetic energy (TKE) as key indicators. The results showed that TKE developed later than TI, forming a plateau-like shape. This plateau was considered the decay region, with the transition and far-wake regions located before and after it, respectively. Additionally, the power law exponent of TI decreased from −0.731 in the decay region to −0.765 in the far wake, indicating a steeper decay further downstream. Overall, the wake map of the tidal stream turbine model exhibited similarities to that of a previously reported wind turbine model.

Suggested Citation

  • Sejin Jung & Heebum Lee & Dasom Jeong & Jihoon Kim & Jin Hwan Ko, 2025. "Study on the Wake Characterization of a Horizontal-Axis Tidal Stream Turbine Utilizing a PIV System in a Large Circulating Water Tunnel," Energies, MDPI, vol. 18(7), pages 1-15, April.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:7:p:1870-:d:1629743
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/18/7/1870/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/18/7/1870/
    Download Restriction: no
    ---><---

    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:gam:jeners:v:18:y:2025:i:7:p:1870-:d:1629743. 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: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    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.