トンネル火災における遡上する熱気流の温度分布に関する模型実験(流体工学,流体機械)

概要

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This paper examines the measurement of the temperature of backlayering thermal fume in a fire specially created in a model tunnel. The model tunnel employed in this fire was set up in a turbulent flow so that we considered the principle of similarity of thermal characteristic on the wall. As to the thermal fume, we measured the heat release rate, the velocity of the wind and the temperature. Above all, the temperature was measured at several points at the same time. The followings were clarified in this study: The range of quasi steady state was created when thermal fume went backlayering. Both by electronic balance and a radiation measurement the heat release rate became approximately same measured value. Thermal fume became stratified on the upper reaches of the fire. Evacuation is possible on the upper reaches of the fire when a minibus is on fire.
2010-08-25