In this paper, simulation of fire in a short 2-lane road tunnel and its evacuation are described. Two traffic situations in the tunnel and their impact on people evacuation in fire conditions are analyzed. For simulation of the tunnel fire, the FDS (Fire Dynamics Simulator) system, version 5.5.3 based on advanced CFD (Computational Fluid Dynamics) fire model is used. The evacuation of people in...

In this paper, the use of Fire Dynamics Simulator (FDS) and its evacuation module, Evac for modelling fire and people evacuation in a road tunnel is illustrated. For given fire scenario and traffic situation in the tunnel, behaviour of individual evacuees as well as groups of evacuees is analyzed in order to demonstrate the impact of fire on people evacuation. Some specific features of the use ...

In this paper, the impact of vehicles in road tunnel on smoke spread in case of fire is illustrated using the FDS (Fire Dynamics Simulator) system. FDS is a CFD-based fire field model capable to simulate fire in various environments capturing a big variety of physical processes related to fire. A set of simulations of fire in a 300 m long two-lane single directional road tunnel with longitudina...

Fire Dynamics Simulator (FDS) is an advanced simulation tool used by fire engineers. The work described in this paper enables geometrical information to be transferred to the simulation tool using the IFC building information model. A parser tool has been developed to extract fire engineering related information from the IFC model and a web-based application has been created to generate FDS inp...

In this study, fire in a short 2-lane single-directional road tunnel with two different traffic situations is considered and the impact of spread of fire and smoke on people evacuation is investigated. The FDS+Evac system used comprises of FDS (Fire Dynamics Simulator), an advanced CFD (Computational Fluid Dynamics) fire field model supplemented by agent-based FDS evacuation model, Evac. Evac i...

A computational fluid dynamics (CFD) model of fire and smoke transport is described. Combustion is represented by means of a single conserved scalar known as the mixture fraction. Radiation transport is approximated in the gray gas limit. The algorithms have been incorporated in the Fire Dynamics Simulator (FDS), a computer program maintained by the National Institute of Standards and Technolog...

A state-of-the-art integrated environment was created to study interaction among fire, structure and agent models in a fire evacuation from a typical office building. For the fire simulations NIST large-eddy simulation code Fire Dynamics Simulator (FDS) was used. The code is based on a mixture fraction model. FDS provided time resolved temperature, CO, CO2, soot distribution in the building. Th...

Computational tools have been developed at the National Institute of Standards and Technology (NIST) for modeling fire spread and smoke transport in order that various professionals such as fire protection engineers, fire researchers, fire investigators, fire fighters, AHJ’s (authorities having jurisdiction) etc. may study the dynamics of fire with the ultimate aim of improving fire safety. The...

Title of Document: Flame Extinction and Air Vitiation Effects In FDS In Poorly Ventilated Compartment Fires Zhixin Hu, Master Thesis, 2005 Directed by: Arnaud Trouvé, Associate Professor Department of Fire Protection Abstract: Compartment fires with different ventilation conditions exhibit different dynamical behaviors, ranging from steady fuel-limited fires to unsteady airlimited fires. Numeri...