Flame spread of droplet-cloud elements with two-droplet interaction in microgravity
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- MIKAMI Masato
- Department of Mechanical Engineering, Yamaguchi University
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- WATARI Hidetaka
- Department of Mechanical Engineering, Yamaguchi University
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- HIROSE Tsutomu
- Department of Mechanical Engineering, Yamaguchi University
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- SEO Takehiko
- Department of Mechanical Engineering, Yamaguchi University
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- SAPUTRO Herman
- Mechanical Engineering Education Department, Sebelas Maret University
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- MORIUE Osamu
- Department of Mechanical Engineering, Kyushu University
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- KIKUCHI Masao
- JEM Utilization Center, Japan Aerospace Exploration Agency
抄録
<p>This research conducted microgravity experiments to investigate the flame-spread characteristics of the fuel-droplet-cloud element with uneven droplet spacing, which is a basic element of a randomly distributed droplet cloud at the critical condition for group-combustion occurrence. Flame spread to a droplet followed by burning with two-droplet interaction was observed in microgravity to investigate the effect of flame-spread direction and local interactive effect. The results show that the flame-spread rate to a droplet in a perpendicular direction to the axis of two interacting droplets was greater than that to the droplet in the same direction as the axis of two interacting droplets. The temperature distribution around burning droplets was measured by the Thin Filament Pyrometry (TFP) method based on radiation from 14-micron SiC fibers suspending droplets at their intersections. The flame-spread-limit distance increased with two-droplet interaction in both flame-spread directions. This also shows the dependence of the flame-spread direction. The flame spreading after two-droplet interaction in different directions is discussed considering the temperature distribution development. An approximation of the flame-spread-limit distance is also presented.</p>
収録刊行物
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- Journal of Thermal Science and Technology
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Journal of Thermal Science and Technology 12 (2), JTST0028-JTST0028, 2017
一般社団法人日本機械学会・社団法人日本伝熱学会
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詳細情報 詳細情報について
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- CRID
- 1390282680221652736
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- NII論文ID
- 130006106191
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- ISSN
- 18805566
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可