Abstract
Using FDS (Fire Dynamics Simulator), a tunnel fire was simulated. On the ceiling of tunnel, six sprinklers were lined, and these water sprays made a water screen in order to interrupt a thermal flow and a smoke flow. The author's previous study showed that the smaller the particle size of water droplets, the shorter traveling distance of a thermal flow and a smoke flow. This article shows the effect of evaporation of water droplet. Volume fraction of water vapor and velocity field near the sprinklers were investigated in different water droplet size conditions.
