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1 de ene. de 2021 · A spreading flame front is often assumed to be in a steady state with fixed flame properties (e.g., flame shape, flame length, flame tilt angle, flame emissivity, and flame temperature), fuel bed properties (e.g., fuel density, fuel moisture content, and the packing ratio of fuel bed), weather conditions (e.g., wind speed), and terrain ...
25 de sept. de 2021 · As the packing ratio (β) is the ratio of bulk density (ρ b) to particle density (ρ p), it follows that the rate of spread of fire in denser fuelbeds, with high bulk density, is less influenced by slope than in lighter fuel beds.
1 de jul. de 2021 · Their list of models contains 9 grass-type options, each of them with a characteristic value of fine fuel load, SAV ratio and packing ratio. Additionally, they suggested a range of dead fuel moisture and wind conditions to evaluate these fuel models.
1 de abr. de 2022 · Byram proposed to use the ratio κ = P f / P w to characterise wildfires; thus, this ratio is also called Byram’s energy criterion [20], [87]. Byram pointed out that this ratio could be useful in understanding and predicting the onset of erratic fire behaviour and the occurrence of blow-up fires.
The depth and bulk density were adjusted by varying the mass of fuel per unit volume of the fuel bed. Rather than reporting bulk density, we use the term “packing ratio” (volume of fuel per unit volume of fuel bed), a term more common to wildland fire. Bulk density is the product of packing ratio and fuel density.
25 de sept. de 2021 · The degree to which fuel load contributes to fire behavior, especially to the flaming front properties, is termed fuel availability and depends on fuel structure and moisture. Fuel depth, bulk density, and packing ratio are descriptors of fuel structure that affect heat transfer and fire-spread rate.
The influence of packing ratio on forest fuel fire spread on a laboratory scale: no wind, no slope. Hanane Boutchiche. 2022, Imprensa da Universidade de Coimbra eBooks. See Full PDF. Download PDF. Journal of Physics: Conference Series.
