D211 多孔質伝熱のモデリングの進展(基調講演,OS-18 多孔質の新しい展開I)

概要

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The recent developments associated with modeling flow and heat transfer in porous media are reviewed in this note. The non-Darcy terms such as Forchheimer and Brinkman terms are examined for their validity and corresponding limiting conditions. Available models for estimating the thermal dispersion are discussed referring to the dispersion flux transport equation. The correlations for the interfacial heat transfer coefficient are presented, which are required for modeling non-thermal equilibrium cases. Moreover, one of controversial issues associated with flows in porous media, namely, the use of the time-space averaging order for modeling turbulence in porous media, is revisited in this review. The LES results reported recently are examined to elucidate the turbulent phenomena in porous media. The LES study reveals that Ergun's equation may well describe the drag relationship for the turbulent flow in porous media. Furthermore, it suggests that turbulence may appear in porous media at comparatively low Reynolds number.
一般社団法人日本機械学会の論文
2005-11-02