Performance-based approch to fire safety engineering: likely fire curve vs. experimental fire curve.

The purpose of this study is to obtain the HRR function “ex post” by making a simulation of natural fire in realistically rail coach by imposing a minimum effective primer. The simulated HRR curve, appropriately linearized, allows to estimate a Likely Fire Curve (LFC). The fire design settings for simulation of fire in a rail coach proposes to compare the developed simulations with a likely fire curve and experimental fire curve (Ingason et al., 1994: 08). The simulated rail coach aims to study the thermo-fluid-dynamic real field. The simulated train has specified overall dimensions equal to: 3,6 x 20,9 x 3,2 (m3). The selected images highlight the variation of the temperature and thermical radiation flux and show sudden lowering of neutral plane below the average height of the openings and the lowering of the isotherm 600°C of the height of survival (conventionally placed at 2 m). (Babrauskas et al., 2003). The discretized function “Likely Fire Curve” (LFC) is iso-integral curve compared with the fire experimental curve (Ingason et al., 1994: 08). The simulated HRR curve was linearized to obtain a HRR curve inserted as input in the FDS-EVAC solver for the large scale simulation of structure.