208 PET樹脂微粒子の燃焼形態に及ぼす粒子速度と周囲燃焼ガス流速との相対速度の影響(再資源化・リサイクル・熱利用技術,資源循環・廃棄物処理技術)

概要

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The burning process of micro PET particles is observed, when they are supplied into a sinusoidally oscillating lean propane-air premixed flame. Since PET particles follow the gas flow out of phase and produce relative velocity due to the difference in inertia force, effects of the relative velocity on the flame patterns in PET particle combustion can be systematically examined. The velocity vector fields of hot combustion gas are conditionally measured with a PIV system, whereas the velocities of objective PET particles are measured with a PTV system. It can be certified that, when a PET particle flies faster than the ambient gas flow, a long thin envelop flame tailed to the upstream direction is formed behind it, and that the boundary of the thin envelop flame transforms into a regular cluster of brilliant spots having diameters of several microns in the final stage of PET particle combustion.
社団法人日本機械学会の論文
2008-07-09