ショック・チューブによる液滴の着火の実験
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概要
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Results are reported of an experimental study of the behavior of a fuel droplet suspended in the plane of collision of two oppositely-facing shock waves, which bring the surrounding oxidizer gas instantaneously to a high-temperature stagnant state. For three kinds of liquid fuels, viz. decane, tetralin and cetane, strong emissions indicating ignition were observed to start from around the droplet with a certain delay time and to spread out later in all directions. Observations by Schlieren photography revealed that the droplet is not atomized prior to ignition as in the incident shock experiments. The distortion and breakup of the droplet take place after ignition, whereby the luminosity appears to spread with the fragments. The ignition lags were plotted against the temperatune attained in the collision plane for each fuel, and an Arrhenius-type dependence was obtained. The absolute value of the ignition delay was found to be definitely shorter than the available furnace (static-experiment) data. Some inferences are presented for anomalous aspects of the droplet behavior observed.
- 社団法人 日本航空宇宙学会の論文
社団法人 日本航空宇宙学会 | 論文
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