| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
In this study, the aim was to develop a theory to predict the mass flow rate of smoke under natural ventilation and the position of smoke descent, furthermore, to elucidate the confinement phenomenon of ventilation. First, we developed a new theory to predict the mass flow rate of smoke in a tunnel fire. The relative error between the mass flow rate of smoke predicted by our newly developed theory and that measured during the fire experiment was within about 20%. Next, a new model of a tunnel fire was developed to predict the front smoke temperature, front velocity. The newly developed theory was accurate enough to predict for experimental results. These theories developed in this study can be applied to safe management of tunnels and evacuation safety design.
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