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Heat transfer by natural convection from an isothermal downward-facing round plate in unlimited space

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  • Radziemska, E.
  • Lewandowski, W. M.

Abstract

A theoretical analysis and experimental study of natural convective heat transfer from an isothermal downward-facing horizontal round plate has been carried out. The results are presented in the form of correlations between the Nusselt and Rayleigh numbers. The correctness of the theoretical model, proposed to describe convective heat transfer from the downward-facing round plate, and the simplifying assumptions introduced, were verified by comparison with contours of static temperature and velocity distributions determined from numerical simulations using the FLUENT/UNS code and estimated by flow visualisations using interferometry, images of particle tracks, and a liquid crystal foil. The experimental measurements were performed in air and water using a plate of diameter D=0.07 m. The theoretical, experimental, and numerical results are all in excellent agreement.

Suggested Citation

  • Radziemska, E. & Lewandowski, W. M., 2001. "Heat transfer by natural convection from an isothermal downward-facing round plate in unlimited space," Applied Energy, Elsevier, vol. 68(4), pages 347-366, April.
    • Handle: RePEc:eee:appene:v:68:y:2001:i:4:p:347-366
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    1. Ismail, M.S. & Ingham, D.B. & Hughes, K.J. & Ma, L. & Pourkashanian, M., 2013. "Thermal modelling of the cathode in air-breathing PEM fuel cells," Applied Energy, Elsevier, vol. 111(C), pages 529-537.
    2. Duan, Juan, 2021. "The PCM-porous system used to cool the inclined PV panel," Renewable Energy, Elsevier, vol. 180(C), pages 1315-1332.
    3. Wang, Zhihao & Sharafian, Amir & Mérida, Walter, 2020. "Non-equilibrium thermodynamic model for liquefied natural gas storage tanks," Energy, Elsevier, vol. 190(C).
    4. Jung, Byungchan & Park, Kiheum & Sohn, Younghoon & Oh, Juyoung & Lee, Joon Chae & Jung, Hae Won & Seo, Yutaek & Lim, Youngsub, 2022. "Prediction model of LNG weathering using net mass and heat transfer," Energy, Elsevier, vol. 247(C).
    5. Jin-Cherng Shyu & Tsuni Chang & Shun-Ching Lee, 2017. "A Numerical Study on Natural Convection Heat Transfer of Handheld Projectors with a Fin Array," Energies, MDPI, vol. 10(3), pages 1-17, February.
    6. Chen, Han & Yang, Guang & Wu, Jingyi, 2023. "A multi-zone thermodynamic model for predicting LNG ageing in large cryogenic tanks," Energy, Elsevier, vol. 283(C).

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