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International Heat Transfer Conference 12

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

Lattice Boltzmann simulation of flow and heat- and mass-transfer with a chemical reaction in a porous structure

Takaji Inamuro
Department of Chemical Engineering, Kyoto University, Kyoto 606-8501, Japan

Riki Mizuno
Department of Chemical Engineering, Kyoto University, Kyoto 606-8501, Japan

Fumimaru Ogino
Department of Chemical Engineering, Kyoto University, Kyoto, Japan

DOI: 10.1615/IHTC12.4070
6 pages

要約

A lattice Boltzmann method for simulating flow and heat- and mass-transfer with chemical reaction is developed and applied to the problem of flow and heat- and mass-transfer with a simple exothermic reaction in a three-dimensional porous structure. At the low Reynolds number the flow field is well-regulated, while at the high Reynolds number various vortices appear behind bodies and the flow field becomes complicated one. High temperature spots appear on the surfaces of the bodies where the flow velocity is large, and the thermal boundary layers are also developed in front of the bodies at high Reynolds number. The concentration profile shows similar features to the temperature fields. It is found that the chemical reaction takes place not uniformly but locally on the surfaces of the bodies in the porous structure, and this feature is more remarkable as the Reynolds number increases. The calculated j-factors of heat- and mass-transfer agree well with available experimental data.

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