Abstract

Mass transfer has been numerically studied in a laminar flow through a circular graphite tube at high temperature. Homogeneous (carbon monoxide combustion) and heterogeneous (graphite oxidation) chemical reactions occur in the multicomponent gas mixture : helium, oxygen, carbon monoxide and carbon dioxide. The effects of carbon monoxide combustion and graphite oxidation on the mass transfer coefficients were quantitatively and qualitatively clarified in the range of 50 to 1000 of inlet Reynolds number, 0 to 0.5 of inlet oxygen mass fraction and 800 to 1600°C of temperature.

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