B112 Mechanism of Flame Spreading over Polystyrene Bead Array in Microgravity(Solid combustion/incinerator)

概要

論文の詳細を見る
Flame spreading over polystyrene beads arranged in line have been investigated under microgravity as a simulation of flame propagation phenomena of particle cloud combustion. Some experimental parameters, such as O_2 concentration, particle spacing, pressure, and inert gas type, have been examined to know their effect on the flame spreading characteristics. Further, the temperature distribution ahead of the propagating flame front have been estimated by the Mach-Zehnder interferometry. Based on these results the mechanism of flame spreading over fuel particle array has been discussed. The results showed that the importance of relative position between flame front and unburned fuel particle next to the flame front. When the particle is farther than the flame radius, thermal diffusion process has a strong effect on the flame spread rate, while its effect is not so dominant when the flame radius is larger than the particle spacing. The importance of the radiation reabsoption phenomena was also pointed out based on the interferometry results.
一般社団法人日本機械学会の論文
2000-10-01