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Modélisation et Simulations Numériques de la Propagation de Feux de Forêts

Abstract : The prediction of forest fire propagation consists in finding the motion of the forest fire front. This thesis deals with the Richards' one dimensional elliptical growth forest fire propagation so as to find an intrinsic expression of the fire front. An equivalent optical geometric variational formulation of this model is given too. A tridimensional model of forest fire propagation is then found thanks to an homogenisation by volume averaging and irreversible thermodynamic processes. Simplifications of this model followed by a reduction to the bidimensional soil surface leads to a bidimensional model, that deals with principal parameters of the propagation of forest fire. The shape of correlations used by the elliptical growth forest fire model is then deduced. The non local influence of the radiated flux issuing from fire area that is above the vegetation is then introduce too. Numerical simulations of this bidimensional model with non local radiation have been performed at least.
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Contributor : Jonathan Margerit <>
Submitted on : Friday, November 7, 2003 - 6:33:07 PM
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  • HAL Id : tel-00003730, version 1


Jonathan Margerit. Modélisation et Simulations Numériques de la Propagation de Feux de Forêts. Modélisation et simulation. Institut National Polytechnique de Lorraine - INPL, 1998. Français. ⟨tel-00003730⟩



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