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Role of Accumulation for Ignition of Fuel Beds by Firebrands



Samuel L. Manzello, Sayaka Suzuki


Large outdoor fires are one of the prominent fire problems in the world. Spot fires, caused by firebrands, are known as a key mechanism of rapid fire spread. Firebrands ignite unburned fuels far ahead of fire front. In large outdoor fires, firebrands are thought to accumulate and ignite unburned fuel which cannot be ignited by a single firebrand. Experiments are performed to investigate the ignition behavior of fuel beds changing fuel moisture content (FMC) and wind speed. It was found that accumulated firebrands could cause ignitions on fuel beds with high FMC, the upper limit of FMC increased from 6 m/s to 8 m/s.
Applications in Energy and Combustion Science


Large Outdoor Fires, WUI Fires, Ignition
Created July 10, 2020, Updated July 15, 2020