Shapes of simulated fires in discrete fuels

摘要: Abstract Simulation models are used to examine the possible effects of discrete fuel distributions and several fire-spread mechanisms on fire shapes. Two postulated spread —heat accumulation flame contact—are shown yield near-ellipses in continuous fuels, but a wide range shapes very patchy fuels. The alternative include ovoids, “tear-drop” (with ignition point at varying positions major axis), straight lines. Simulated fires discrete, fuels less regular shape than uniform show little or no backburning. results may explain certain observed differences between wildfire that occur different environments burning intensities.