Investigating Firebrand Accumulation over Various Scales
Samuel Manzello, Sayaka Suzuki
As structures are exposed to wind, stagnation planes are produced around structures. Using full-scale experiments, the authors demonstrated that firebrands may accumulate in these stagnation planes. In a subsequent full-scale study performed by the authors that made use of firebrand showers of longer duration, experiments revealed that wind speed influences not only the spatial location and extent of the accumulated firebrands in the stagnation plane in front of the obstacle, but also the nature of the smoldering combustion intensity of the accumulated firebrands. All of the prior work was limited to firebrand distributions similar to burning vegetation conducted using full-scale experimental facilities. Here, the firebrand distributions were varied to simulate both burning structures and vegetation, and conducted using reduced-scale experimental facilities to determine if simpler experiments may provide insights into this complex problem.
Proceedings of the 54th Japanese Combustion Symposium