Study on soot formation in spray flames (effect of droplet size distribution)

Jun Hayashi, Fumiteru Akamatsu, Chulju Ahn, Takehiko Seo, Hiroaki Watanabe, Ryoichi Kurose

研究成果: ジャーナルへの寄稿学術誌査読

2 被引用数 (Scopus)

抄録

Effect of the droplet size distribution of fuel spray on the soot formation process in spray flames is investigated. The vibratory orifice atomizer is used to control the droplet size distribution of fuel spray. Two-dimensional soot volume fraction and primary soot particle size are measured by the Time-Resolved Laser Induced Incandescence (Time-Resolved LII) method and direct numerical simulation. The relationship between spatial distribution of fuel droplets and soot formation area are observed by the LII method and Interferometric Laser Imaging Droplet Sizing (ILIDS) method. The results show that flame structures of spray flame and soot formation process are affected critically by the mean droplet size of fuel spray. The mean soot formation area is increased by increase of the mean droplet size of fuel spray. The primary soot particles become large at around the edge of soot formation area. This trend mainly occurs from surface growth of soot particles. The group of some droplets and its vapor forms the soot formation area, and the large droplet of liquid fuel deforms shape of the soot formation area.

本文言語英語
ページ(範囲)429-437
ページ数9
ジャーナルNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
74
2
DOI
出版ステータス出版済み - 2月 2008
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 凝縮系物理学
  • 機械工学

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