SIMULATION OF TUNNEL FIRES USING A ZONE MODEL

The use of a fire zone model for simulating tunnel fires is reported i n this paper. The zone model CFAST version. 2.0 was selected as the fi re simulator. Numerical experiments were performed in an arbitrary tun nel by considering it as a single compartment, a two-room structure an al a three-room structure. Five fires that would have a high likelihoo d of occurring in a tunnel were considered. They were caused by burnin g wood cribs, a passenger train a subway coach, a truck, and a school bus. Results are also compared with another zone model, CCFM. VENTS, a nd those predicted from a self-developed fire field model for studying the aerodynamic and smoke movement in a tunnel. Further, experimental data collected in a smaller tunnel from an abandoned copper mine in N orway was used 60 justify the prediction.