Evaporation and Ignition of a Fuel Droplet on a Hot Surface : Part 2, Ignition

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概要

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• The ignition process of a single fuel droplet (n-centane, initial diameter approximately 2 mm) on a hot surface has been investigated. The mass evaporated in the very short duration soon after the initiation of contact with the hot surface has been measured. The following conclusions could be obtained. (1) The ignition delay time curve concerning the wall temperature has a maximum and a minimum point as in the case of the evaporation life time. But these critical values in each of them do not coincide with each other, because the evaporation rate in the ignition delay time (τi), directly controlling τi, differs so much from that in time of total evaporation. (2) The ignition delay time is controlled by the chemical reaction rate when the hot surface temperature (t_w) is lower than the Leidenfrost point, and by the physical process when t_w is higher than that.

• 一般社団法人日本機械学会の論文

著者

• Ikai Shigeru

  Professor Faculty Of Engineering Keio University

• Mizomoto Masahiko

  Assistant Professor Faculty Of Engineering Keio University

関連論文

• Evaporation and Ignition of a Fuel Droplet on a Hot Surface : Part 1, Evaporation
• Evaporation and Ignition of a Fuel Droplet on a Hot Surface : Part 2, Ignition

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