Published on Nov 30, 2009in Combustion Science and Technology1.564
· DOI :10.1080/00102200903034760
Shinji Nakaya6
Estimated H-index: 6
(OPU: Osaka Prefecture University),
Mitsuhiro Tsue3
Estimated H-index: 3
(UTokyo: University of Tokyo)
+ 4 AuthorsMichikata Kono23
Estimated H-index: 23
(UTokyo: University of Tokyo)
Experiments have been carried out on the effects of pre-vaporized fuel in the ambience on spontaneous ignition behavior of isolated fuel droplets. An isolated droplet of n-heptane or n-dodecane, which is sustained by a quartz fiber, is inserted into a high-temperature gas field including fuel in the electric furnace. Methane and n-heptane are selected as fuels of the ambience. The ambient pressure and the temperature are set to be 0.3 MPa and 700 K, respectively, in order to prevent the consumption of methane and oxygen in the ambience. The condition of the ambience including fuel is elucidated using a numerical analysis of chemical reactions. The results indicate that the ignition delay time increases due to methane included in the ambience. In the case of the ambience where n-heptane vapor is included, both n-heptane and oxygen are consumed by chemical reactions prior to the droplet insertion. The ignition delay time of n-heptane droplet in the reacted n-heptane and air mixture is larger than that in ai...
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