Fire Modeling: a Flaming Cocktail Made of CFD, Combustion Modeling, Data Assimilation and Forecasting
Arnaud TrouvéCollege Park, Maryland 20742, USA
Wednesday, July 1st, CERFACS Conference Room - 14h30
Arnaud Trouvé
Department of Fire Protection Engineering, University of Maryland
College Park, Maryland 20742, USA
Department of Fire Protection Engineering, University of Maryland
College Park, Maryland 20742, USA
We present in this seminar an introduction to fire dynamics and a review of current challenges found in numerical simulations of fire phenomena, including compartment fires and wildland fires.
We start this presentation with a brief review of the main dynamical features of compartment fires, including the formation of a buoyancy-dominated, hot and sooty, ceiling layer downstream of the fire plume, and the possible subsequent transition to flashover and under-ventilated combustion conditions. We then proceed to identify the main technical challenges found in numerical modeling of compartment fires, including the challenges of providing suitable model descriptions of solid fuel sources, radiative heat transfer, soot formation, flame extinction, fire suppression and explosions.
We continue this presentation with a discussion of the main dynamical features of wildland fires, including the wide range of flame propagation regimes (e.g., ground fires, surface fires or crown fires) and the large dimension of the parameter space (including effects of biomass fuel properties, topographical conditions and meteorological conditions). We then focus on a promising novel application of the data assimilation concepts and methods developed in the area of weather modeling (i.e., the integration of sensor-based observations and computer models) to the development of fire forecasting capabilities for real-time predictions of the evolution of wildland fires.
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