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Publication Citation: The Effects of Winds From Burning Structures on Ground-Fire Propagation at the Wildland-Urban Interface

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Author(s): Ronald G. Rehm;
Title: The Effects of Winds From Burning Structures on Ground-Fire Propagation at the Wildland-Urban Interface
Published: June 01, 2008
Abstract: A simple physics-based mathematical model is developed for prediction of the propagation of a grass-fire front driven by an ambient wind and by entrainment winds generated from one or moreburning structures. This model accounts for the heterogeneous nature of the burning in a particular wildland-urban-interface (WUI) setting, where the entrainment from fundamentally three-dimensional structure-fire plumes can change the propagation of a two-dimensional ground-fire front. Data on grass and structure fires are presented and compared to justify the model. Scaling effects on the fire-front propagation-speed are given as afunction of the location of the front, of the heat release rate of a single burning structure, of the total number of burning structures and of the burning-structure density. Also, detailedfront propagation changes due to a single and multipleburning-house scenarios are presented.
Citation: Canadian Journal of Forest Research-Revue Canadienne De Recherche Forestiere
Volume: 12
Issue: 3
Pages: pp. 477 - 496
Keywords: burning structures;fire research;grass fires;heterogeneous burning;mathematical model;model of fire propagation;physics-based model;plume-entrainment wind;wildland-urban interface
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