The Balbi model, a simplified physical propagation model for surface fires, development and applications

François Joseph CHATELON

University of Corsica

Short abstract:

The Balbi model is a simplified physical surface fire behaviour model which takes into account both radiation and convection as heat transfer modes. The model, developed at the University of Corsica, is faster than real time and then it could be used in operational tools for firefighters or people involved in fire management. The model has no model parameters and only depends on fuel characteristics, the topography and meteorological conditions. The last version of the model is as simple as empirical models found in the literature. Because of its simplicity and its quickness, it represents a good candidate for an incorporation into a coupled fire/atmosphere simulator. The model has known several developments: definition of non-propagation criteria, prediction of fire eruption’s triggering and definition of safety zones widths when it was coupled to the acceptable safety distance analytical model developed at the University of Corsica.