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<p>The experimental results on heat transfer during the gas coolant flow in a space formed by a dense packing of seven heated tubes are presented. Eight separating inserts with longitudinal displacers were used to fix the tubes and ensure a uniform gas flow field in the internal and external channels of the tube bundle. Gas mixtures with a large difference in the Prandtl number were used as the working fluid: air (Pr = 0.7) and helium-xenon mixture (Pr = 0.23). The experiments were carried out in the range of Reynolds numbers of 2218–12900.</p>

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Investigation of heat transfer during the flow of a mixture of gases with a small Prandtl number in a rod assembly with separating grids

  • 期刊论文

  • 发表日期：

    2025年1月1日

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  • O. V. Vitovsky,
  • M. S. Makarov,
  • K. S. Lebeda,
  • V. S. Naumkin

摘要

The experimental results on heat transfer during the gas coolant flow in a space formed by a dense packing of seven heated tubes are presented. Eight separating inserts with longitudinal displacers were used to fix the tubes and ensure a uniform gas flow field in the internal and external channels of the tube bundle. Gas mixtures with a large difference in the Prandtl number were used as the working fluid: air (Pr = 0.7) and helium-xenon mixture (Pr = 0.23). The experiments were carried out in the range of Reynolds numbers of 2218–12900.