Modeling wildland fire propagation with level set methods

Authors:
V. Mallet;D. E. Keyes;F. E. Fendell
Affiliations:
INRIA, Paris-Rocquencourt research center, BP 105, 78153 Le Chesnay cedex, France and CEREA, joint laboratory ENPC - EDF R&D, Universitéé Paris-Est, Marne la Vallée, France;Columbia University, Appl Phys & Appl Math, 200 S. W. Mudd Bldg., MC 4701, 500 W. 120th Street, New York, NY, 10027, USA;Northrop Grumman Space Technology, One Space Park, Redondo Beach, CA, 90278, USA
Venue:
Computers & Mathematics with Applications
Year:
2009

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Abstract

Level set methods are versatile and extensible techniques for general front tracking problems, including the practically important problem of predicting the advance of a fire front across expanses of surface vegetation. Given a rule, empirical or otherwise, to specify the rate of advance of an infinitesimal segment of fire front arc normal to itself (i.e., given the fire spread rate as a function of known local parameters relating to topography, vegetation, and meteorology), level set methods harness the well developed mathematical machinery of hyperbolic conservation laws on Eulerian grids to evolve the position of the front in time. Topological challenges associated with the swallowing of islands and the merger of fronts are tractable. The principal goals of this paper are to: collect key results from the two largely distinct scientific literatures of level sets and fire spread; demonstrate the practical value of level set methods to wildland fire modeling through numerical experiments; probe and address current limitations; and propose future directions in the simulation of, and the development of, decision-aiding tools to assess countermeasure options for wildland fires. In addition, we introduce a freely available two-dimensional level set code used to produce the numerical results of this paper and designed to be extensible to more complicated configurations.