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Thermal convection between two coaxial horizontal square containers

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Summary

This paper is concerned with experiments on thermal convection between two coaxial square containers. It is found that there exists a critical Rayleigh number (Ra)c of 1660 approximately for the onset of the thermal convection in top-test section. The vertical velocity distributions at the middle height of left side-test section agree with the classical theory well. The width of the present convection roll in top-test section is of the same order as the height. The reason why the convection rolls or fluid mass in top-test section are transported to the right- or left-direction is discussed and attributed to a new mechanism of mass transport, consisting of three-stages broadly, viz., (a) extension-stage, (b) splitting-stage, and (c) birth-stage.

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Author notes

  1. T. M. S. Nakagawa

    Present address: Shisei Institute of Innovative Science, 920-21, Ishikawa, Japan

  2. K. Higashi

    Present address: Kanazawa Institute of Technology, 921, Ishikawa, Japan

  3. Y. Funawatashi & T. Suzuki

    Present address: Toyama Prefectural University, 939-03, Toyama, Japan

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    1. T. M. S. Nakagawa
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    2. K. Higashi
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    3. Y. Funawatashi
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    4. T. Suzuki
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    Nakagawa, T.M.S., Higashi, K., Funawatashi, Y. et al. Thermal convection between two coaxial horizontal square containers. Acta Mechanica 128, 183–199 (1998). https://doi.org/10.1007/BF01251889

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    • DOI: https://doi.org/10.1007/BF01251889

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