Lukas Valasek

Cinema Fire Modelling by FDS

Recent advances in computer fluid dynamics (CFD) and rapid increase of computational power of current computers have led to the development of CFD models capable to describe fire in complex geometries incorporating a wide variety of physical phenomena related to fire. In this paper, we demonstrate the use of Fire Dynamics Simulator (FDS) for cinema fire modelling. FDS is an advanced CFD system intended for simulation of the fire and smoke spread and prediction of thermal flows, toxic substances concentrations and other relevant parameters of fire. The course of fire in a cinema hall is described focusing on related safety risks. Fire properties of flammable materials used in the simulation were determined by laboratory measurements and validated by fire tests and computer simulations

Impact of Turned Cars in Tunnel on Modelling People Evacuation in Fire Conditions

People evacuation in tunnel in fire conditions belongs to important tunnel safety problems. In this paper, simulation of fire in a short unidirectional 2-lane road tunnel and its evacuation using the FDS+Evac system are analysed. FDS+Evac enables to simulate fire spread in the tunnel utilizing the obtained fire characteristics for modelling evacuation of people. Three evacuation scenarios which differ from each other by cars location in the tunnel are illustrated. The impact of turned cars on fire spread and people egress is demonstrated. Some specific particularities of the current version of FDS+Evac, which must be taken into account in modelling the egress in tunnel fire conditions to avoid misrepresentation of input representation, are discussed.