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Abstract <p>This study is aimed at solving the classical heat transfer problem arising in components of the gas reactor with very high coolant temperatures (VHTR). Numerical modeling methods are used to analyze heat transfer from the inner wall of a round tube to a flow of helium–xenon mixtures of varying compositions. The influence of massive electrodes located at the inlet and outlet on heat transfer in the central part of the tube, as well as variation in the Prandtl number of the mixed gas coolant in the range from 0.23 to 0.7, is taken into account. Heat input was implemented by a volumetric heat source both in the tube itself and in the massive electrodes.</p>

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Numerical Study of Heat Transfer to a High-Temperature Flow of Helium–Xenon Mixture in a Round Tube

  • 期刊论文

  • 发表日期：

    2025年12月1日

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

摘要

Abstract

This study is aimed at solving the classical heat transfer problem arising in components of the gas reactor with very high coolant temperatures (VHTR). Numerical modeling methods are used to analyze heat transfer from the inner wall of a round tube to a flow of helium–xenon mixtures of varying compositions. The influence of massive electrodes located at the inlet and outlet on heat transfer in the central part of the tube, as well as variation in the Prandtl number of the mixed gas coolant in the range from 0.23 to 0.7, is taken into account. Heat input was implemented by a volumetric heat source both in the tube itself and in the massive electrodes.