J057025 乱流拡散火炎から発達するプルームの特性に及ぼす火炎構造の影響(〔J057-02〕乱流における運動量、熱、物質の輸送現象(2))

• 須藤 仁

  (一財)電力中央研究所

• 服部 康男

  (一財)電力中央研究所

書誌事項

タイトル別名

• J057025 Effects of flame structure on characteristics of a plume developed from a turbulent diffusion flame

抄録

Large-eddy simulations of a fire plume with flames and a buoyant plume without flames are performed. The validity of the simulations is ascertained, and the effects of flame structure on characteristics of a plume are then examined. Concerning the validity, the use of grid systems finer than twentieth part of the fire characteristic length leads the simulations to general agreement with the experiments. The existence of flame raises mean temperature and turbulent intensity, and enhances entrainment efficiency in the flame region, while it rarely affects characteristics in the plume region. Moreover, it is suggested that the enhancement of entrainment efficiency is closely connected with the increase in horizontal motion induced by flames.

収録刊行物

• 年次大会

  年次大会 2013 (0), _J057025-1-_J057025-4, 2013

  一般社団法人 日本機械学会

キーワード

• Flame
• Natural comvection
• Turbulent combustion

詳細情報

• CRID: 1390001205839724288
• NII論文ID: 110009935322
• DOI: 10.1299/jsmemecj.2013._j057025-1
• ISSN: 24242667
• Web Site: https://www.jstage.jst.go.jp/article/jsmemecj/2013/0/2013__J057025-1/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可