For the purposes of this study, nonuniform fire behavior is predicted by modeling fire spread through a hexagonal network of fuel cells. Fire spread is assumed to be a process of contagious growth between cells. Fuel properties are allowed to vary from cell to cell in a prescribed manner but have uniform properties within the cell. Consequently, the nonuniformity of the actual fuel array is simulated through cell to cell variations and has a resolution limited by the cell size. Because of the nature of the modeling process, it is necessary to devise a scheme for collecting data describing nonuniformity and a scheme for filling the hexagonal cell array in a manner that simulates the actual fuel nonuniformity.
United States Department of Agriculture, Forest Service, "Fire Behavior in Nonuniform Fuels" (1979). Wildfires. Paper 6.