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DOI : 10.1155/2011/540390

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Journal of Combustion 2011 (2011) Article ID 540390, 13 pages

Simulation of coupled fire/atmosphere interaction with the MesoNH-ForeFire models

Jean Baptiste Filippi 1, Frédéric Bosseur 1, Xavier Pialat 1, Paul-Antoine Santoni 1, Susanna Strada 2, Céline Mari 2

(05/2011)

Simulating interaction between forest fire and atmospheric processes requires a highly detailed and computationally intensive model. Processing this type of simulations in wildland fires forbids combustion-based models due to the large amount of fuels to be simulated, in terms of quantity and diversity. In this paper we propose an approach that couples a fire area simulator to a mesoscale weather numerical model in order to simulate local fire/atmosphere interaction. Five idealized simulation cases are analysed showing strong interaction between topography and the fire front induced wind, interactions that could not be simulated in non-coupled simulations. The same approach applied to a real case scenario also shows results that are qualitatively comparable to the observed case. All these results were obtained in less than a day of calculation on a dual processor computer, leaving room for improvement in grid resolution that is currently limited to fifty meter.

1 :	Sciences pour l'environnement (SPE)
	Université Pascal Paoli – CNRS : UMR6134
2 :	Laboratoire d'aérologie (LA)
	CNRS : UMR5560 – Observatoire Midi-Pyrénées – INSU – Université Paul Sabatier [UPS] - Toulouse III

Équipe de recherche : Feux

Domaine

:

Informatique/Modélisation et simulation

Mots Clés : Fire spread – wildland – fire – coupled atmosphere-fire numerical model

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Contributeur : Jean Baptiste Filippi <>

Soumis le : Mardi 17 Mai 2011, 11:50:42

Dernière modification le : Jeudi 21 Juin 2012, 13:46:34