C132 遷移沸騰熱伝達の整理式およびモデルの構築(第 3 報)

概要

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The transition boiling heat transfer was examined through a model analysis. Considering a pseudo liquid-solid contact right after detachment of a bubble from liquid-vapor interface as a result of Rayleigh-Taylor instability, transient heat conduction was analyzed in it three dimensionally. A liquid-solid contact time and area were given by a correlation of the fractions of liquid-solid contact in the present transition boiling experiments : τ_<contact>=0.3Γ_t, A_<wet>=15×15 Γ_a, Γ=Γ_tΓ_a=1.000-0.7771Θ-0.2695Θ^2,where θ=(T_w-T_<CHF>)/(T_<MHF>-T_<CHF>). The prediction by the present model was in agreement with the present experimental data for water.
2003-11-10