Anisotropy of effective thermal conductivity analysis of heat transfer coefficient distribution around spherical particles in a packed bed

  • Yusuke Asakuma
  • Masahiro Asada
  • Yushin Kanazawa
  • Tsuyoshi Yamamoto

Abstract

Effective thermal conductivity with radiation is analyzed by a homogenization method. The method used can precisely represent the conditions around particles in a packed bed. In this study, the effects of variation in parameters such as heat transfer coefficient distribution around spherical particles in a packed bed, Reynolds number, temperature and particle size on the conductivity were estimated in order to elucidate the heat transfer mechanism of complex packed structures. The results show that it is unnecessary in heat transfer analysis to consider the anisotropic behavior of the flow direction for larger particles, high Reynolds numbers and high temperatures. However, the heat transfer was anisotropic for smaller particle sizes.

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Published
Jan 25, 2017
How to Cite
ASAKUMA, Yusuke et al. Anisotropy of effective thermal conductivity analysis of heat transfer coefficient distribution around spherical particles in a packed bed. Computer Assisted Methods in Engineering and Science, [S.l.], v. 22, n. 1, p. 31-38, jan. 2017. ISSN 2956-5839. Available at: <https://cames.ippt.gov.pl/index.php/cames/article/view/12>. Date accessed: 23 dec. 2024.
Section
Articles