We have developed a time-evolving simulation method for smoke and temperature during a tunnel fire using fluid solvers such as FrontFlow/red and OpenFOAM. In previous studies, a vehicle as a fire source was considered equivalent to an inflow of thermal fluid with a constant temperature, which was given as a boundary condition. In this study, an attempt was made to extend the previous studies and introduce a model that considers chemical combustion reactions to reproduce the combustion of fuels and payloads. In this paper, a fire simulation of a pattern with only one vehicle on fire was carried out, and the behavior of the heat and CO2 generated by the combustion reaction was confirmed, showing the potential for introducing a combustion reaction model into tunnel fire simulations.
NEMOTO et al. (Wed,) studied this question.