IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v17y2024i13p3113-d1421199.html
   My bibliography  Save this article

CFD Calculation of Natural Convection Heat Transmission in a Three-Dimensional Pool with Hemispherical Lower Head

Author

Listed:
  • Zhangliang Mao

    (College of Nuclear Science and Technology, Naval University of Engineering, Wuhan 430223, China
    College of Mechanical & Power Engineering, China Three Gorges University, Yichang 443005, China)

  • Yuqing Chen

    (College of Nuclear Science and Technology, Naval University of Engineering, Wuhan 430223, China)

  • Wei Wang

    (College of Nuclear Science and Technology, Naval University of Engineering, Wuhan 430223, China)

  • Qi Cai

    (College of Nuclear Science and Technology, Naval University of Engineering, Wuhan 430223, China)

  • Xianbao Yuan

    (College of Mechanical & Power Engineering, China Three Gorges University, Yichang 443005, China)

  • Jianjun Zhou

    (College of Mechanical & Power Engineering, China Three Gorges University, Yichang 443005, China)

  • Xiaochao Du

    (College of Mechanical & Power Engineering, China Three Gorges University, Yichang 443005, China)

  • Binhang Zhang

    (College of Mechanical & Power Engineering, China Three Gorges University, Yichang 443005, China)

  • Yonghong Zhang

    (College of Mechanical & Power Engineering, China Three Gorges University, Yichang 443005, China)

  • Renzheng Xiao

    (College of Mechanical & Power Engineering, China Three Gorges University, Yichang 443005, China)

Abstract

The integrity of a pressure vessel (PRV) is affected by the decay heat of the molten pool in the lower head, so it is very important to study the natural convection heat transmission in the lower head. Scholars from all over the world have carried out a lot of experimental studies and calculations to determine the convection mechanism and heat transmission characteristics of the molten pool. Most of them were based on the empirical formula of convective heat transmission on the wall of a hemispherical molten pool based on two-dimensional slice experiments and simulation calculations. In this study, FLUENT 2021R1 software was used to simulate the three-dimensional convective heat transmission process of the hemispherical molten pool, and the temperature, velocity and wall heat transmission coefficients of the flow field were analyzed. The results were in good agreement with experimental data from UCLA (University of California, Los Angeles). Through research on the heat transmission of the lower head, the results showed that in the region where the wall angle was θ between approximately 72 and 90 degrees, heat transmission coefficients had larger fluctuations, and a more reasonable empirical relation was proposed. Comparing between the simulation results of CFD and the two-dimensional empirical formula, it was found that the latter one was smaller under the same θ angle condition. Finally, the convection phenomena of different external temperatures were simulated, and the main factors affecting the flow field by temperature were analyzed.

Suggested Citation

  • Zhangliang Mao & Yuqing Chen & Wei Wang & Qi Cai & Xianbao Yuan & Jianjun Zhou & Xiaochao Du & Binhang Zhang & Yonghong Zhang & Renzheng Xiao, 2024. "CFD Calculation of Natural Convection Heat Transmission in a Three-Dimensional Pool with Hemispherical Lower Head," Energies, MDPI, vol. 17(13), pages 1-13, June.
  • Handle: RePEc:gam:jeners:v:17:y:2024:i:13:p:3113-:d:1421199
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/17/13/3113/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/1996-1073/17/13/3113/
    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:17:y:2024:i:13:p:3113-:d:1421199. 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.