IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v10y2017i3p362-d93015.html
   My bibliography  Save this article

Numerical Study of the Effects of Thermal Barrier Coating and Turbulence Intensity on Cooling Performances of a Nozzle Guide Vane

Author

Listed:
  • Prasert Prapamonthon

    (Department of Thermal Science & Energy Engineering, School of Engineering Science, University of Science and Technology of China, Hefei 230027, China)

  • Huazhao Xu

    (Department of Thermal Science & Energy Engineering, School of Engineering Science, University of Science and Technology of China, Hefei 230027, China)

  • Wenshuo Yang

    (Department of Thermal Science & Energy Engineering, School of Engineering Science, University of Science and Technology of China, Hefei 230027, China)

  • Jianhua Wang

    (Department of Thermal Science & Energy Engineering, School of Engineering Science, University of Science and Technology of China, Hefei 230027, China)

Abstract

This work presents a numerical investigation of the combined effects of thermal barrier coating (TBC) with mainstream turbulence intensity ( Tu ) on a modified vane of the real film-cooled nozzle guide vane (NGV) reported by Timko (NASA CR-168289). Using a 3D conjugate heat transfer (CHT) analysis, the NGVs with and without TBC are simulated at three Tus ( Tu = 3.3%, 10% and 20%). The overall cooling effectiveness, TBC effectiveness and heat transfer coefficient are analyzed and discussed. The results indicate the following three interesting phenomena: (1) TBC on the pressure side (PS) is more effective than that on the suction side (SS) due to a fewer number of film holes on the SS; (2) for all three Tus , the variation trends of the overall cooling effectiveness are similar, and TBC plays the positive and negative roles in heat flux at the same time, and significantly increases the overall cooling effectiveness in regions cooled ineffectively by cooling air; (3) when Tu increases, the TBC effect is more significant, for example, at the highest Tu ( Tu = 20%) the overall cooling effectiveness can increase as much as 24% in the film cooling ineffective regions, but near the trailing edge (TE) and the exits and downstream of film holes on the SS, this phenomenon is slight.

Suggested Citation

  • Prasert Prapamonthon & Huazhao Xu & Wenshuo Yang & Jianhua Wang, 2017. "Numerical Study of the Effects of Thermal Barrier Coating and Turbulence Intensity on Cooling Performances of a Nozzle Guide Vane," Energies, MDPI, vol. 10(3), pages 1-16, March.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:3:p:362-:d:93015
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/10/3/362/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/10/3/362/
    Download Restriction: no
    ---><---

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Prasert Prapamonthon & Soemsak Yooyen & Suwin Sleesongsom & Daniele Dipasquale & Huazhao Xu & Jianhua Wang & Zhaoqing Ke, 2018. "Investigation of Cooling Performances of a Non-Film-Cooled Turbine Vane Coated with a Thermal Barrier Coating Using Conjugate Heat Transfer," Energies, MDPI, vol. 11(4), pages 1-17, April.
    2. Chao Gao & Yang Liu & Ruquan You & Haiwang Li, 2022. "Theoretical and Numerical Study on Thermal Insulation Performance of Thermal Barrier Coatings," Energies, MDPI, vol. 15(19), pages 1-14, September.
    3. Peng Guan & Yan-Ting Ai & Cheng-Wei Fei, 2019. "An Enhanced Flow-Thermo-Structural Modeling and Validation for the Integrated Analysis of a Film Cooling Nozzle Guide Vane," Energies, MDPI, vol. 12(14), pages 1-20, July.

    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:10:y:2017:i:3:p:362-:d:93015. 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.