515 高融点燃料液滴の自発着火および燃焼に及ぼす初期液滴直径の影響

概要

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The experiment was performed to investigate the effects of initial droplet diameter on ignition delay and burning time of single fuel droplets. A suspended fuel droplet was exposed rapidly into a hot air, which resulted in auto-ignition and droplet burning. The ignition delay of n-eicosane, which is a high-melting point fuel, increased with increasing the initial droplet diameter, while that of n-octane decreased slightly. On the other hand, the burning time increased linearly with increasing the square of the droplet diameter at ignition, and the effect of the fuel on the burning time was fairly small at each droplet diameter. The experimental data of n-eicosane ignition delay agreed qualitatively well with the results of the numerical simulation, while the effects of gravitational acceleration was neglected in the simulation.
一般社団法人日本機械学会の論文