Direct numerical simulations of heat transfer by solid particles suspended in homogeneous isotropic turbulence

Yohei Sato, Emmanuel Deutsch, Olivier Simonin

研究成果: Article査読

43 被引用数 (Scopus)

抄録

The mechanism of two-phase heat and turbulent transport by small solid particles suspended in a gas flow was investigated by direct numerical simulation in decaying isotropic turbulence with or without a mean temperature gradient. The effect of fluid mean temperature gradient on heat transfer between dispersed and gas phases was examined. Velocity and temperature fields were solved by the pseudospectral method with 1283 grid points. The behavior of 8.192 particles was time advanced by using the motion and energy equations. The imposed temperature gradient in the field affected the Lagrangian autocorrelation coefficient of the fluid temperature along the particle path which decreased more rapidly than that of the particle temperature. The particle temperature fluctuation correlated well with the particle velocity in the direction of the imposed temperature gradient, which was proportional to the magnitude of the gradient.

本文言語English
ページ(範囲)187-192
ページ数6
ジャーナルInternational Journal of Heat and Fluid Flow
19
2
DOI
出版ステータスPublished - 1998 4月

ASJC Scopus subject areas

  • 凝縮系物理学
  • 機械工学
  • 流体および伝熱

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