Flame-Spread Characteristics of n-Decane Droplet Arrays at Different Ambient Pressures in Microgravity

• SANO Narita

  Graduate School of Science and Engineering, Yamaguchi University

• MOTOMATSU Naoya

  Graduate School of Science and Engineering, Yamaguchi University

• SAPUTRO Herman

  Graduate School of Science and Engineering, Yamaguchi University

• SEO Takehiko

  Graduate School of Science and Engineering, Yamaguchi University

• MIKAM Masato

  Graduate School of Science and Engineering, Yamaguchi University

抄録

This research involves microgravity experiments being conducted on flame spread over fuel droplet arrays at different pressures including low-pressure condition in order to improve understanding of flame-spread characteristics under high-altitude relight condition of jet engines. n-Decane was used as a fuel. The ambient pressure ranged from 25 to 200 kPa. The results show that the flame-spread rate and flame-spreadlimit distance decreased with an increase in ambient pressure. As the ambient pressure is increased, the thermal conduction time from the flame of a droplet to the next unburned droplet increases due to the decreased thermal diffusivity, and the droplet heating time also increases due to the increased fuel boiling point, resulting in a decrease in the flame-spread rate and -limit distance. The pressure effect on the flame-spread limit around two interactive burning droplets is also discussed.

収録刊行物

• International Journal of Microgravity Science and Application

  International Journal of Microgravity Science and Application 33 (1), 330108-, 2016-01-31

  日本マイクログラビティ応用学会

キーワード

• Flame Spread
• Droplet Array
• Pressure Effect
• Microgravity

詳細情報

• CRID: 1390285300157574400
• NII論文ID: 130007842530
• DOI: 10.15011/ijmsa.33.330108
• ISSN: 21889783
• 本文言語コード: en
• データソース種別:
  • JaLC
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可