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Proceedings Year : 2016

Numerical Simulation of Grassland-Fires Behavior Using FireStar3D Model

Abstract

This study reports 3D numerical simulations of the ignition and the propagation of grassland fires. The mathematical model consists in solving the conservation equations governing the behavior of the coupled system formed by the vegetation and the ambient atmosphere. Based on a finite volume discretization, the computation code is parallelized using OpenMP directives and had been the subject of numerous validations. the model was previously tested on small scale in case of homogeneous litter fires; in this study it is proposed to test it on larger scale in case of grassland fires. the results are in fairly agreement with experimental data, with predictions of operational empirical-models developed in Australia (MK5) and in the USA (BEHAVE), as well as with predictions of physical models (FIRETEC, WFDS, FireStar2D). The comparison with the literature is based on the estimation of the rate of fire spread (ROS) and the analysis of the fire-front shape.

Dates and versions

hal-01311885 , version 1 (04-05-2016)

Identifiers

Cite

Sofiane Meradji, Gilbert Accary, Dominique Morvan, Oleg Bessonov, Dominique Fougere. Numerical Simulation of Grassland-Fires Behavior Using FireStar3D Model . Topical Problems of Fluid Mechanics, Feb 2016, Prague, Czech Republic. , pp.254, 2016, In Proceedings Topical Problems of Fluid Mechanics 2016, 978-80-87012-58-1. ⟨10.14311/TPFM.2016.018⟩. ⟨hal-01311885⟩

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