Fully Developed Forced-Convection Heat Transfer in Cylindrical Packed Beds with Constant Wall Temperatures

概要

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Fully developed forced-convection heat transfer in a cylindrical packed bed is examined theoretically based on a two-dimensional, distributed parameter model incorporating the effects of non-Darcy, variable porosity and radial thermal dispersion. The validity of the present heat-transfer model is addressed in comparison with available experimental data. Several system parameters such as the Prandtl number Pγ, the ratio of the thermal conductivity of solid to that of fluidκ, the bed radius to particle diameter ratio Γ and the particle Reynolds number Re_p are varied systematically in the theoretical computations. It is found that the Nusselt number Nu_p at Re_pPγ→ 0 takes a constant value depending on bothκ and Γ, while Nu_p for large Re_pPγ depends on both Re_pPγ and Pγ, but scarcely onκ.
一般社団法人日本機械学会の論文
1994-08-15