Estimation of the mass flow rate of smoke ventilation and elucidation of the confinement phenomenon of ventilation during a tunnel fire with natural ventilation

2016 Fiscal Year Final Research Report

• Project/Area Number: 25350474
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Social systems engineering/Safety system
• Research Institution: University of Fukui
• Principal Investigator: Tanaka Futoshi 福井大学, 学術研究院工学系部門, 准教授 (60401791)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: トンネル火災

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.

Free Research Field

火災安全工学