Fractal characteristics of turbulent premixed flames under the conditions of lean limit of flame propagation in a spark ignition engine

Sadami Yoshiyama, Eiji Tomita, Yoshisuke Hamamoto, Takeshi Hamagami

Research output: Contribution to journalArticle


Flame structure of a spark ignition engine under the conditions of lean burn limit was investigated. The experiment was performed with propane air mixture of equivalence ratios of 0.50 and 0.55. The flames had a small structure that the unburned gas was entrained into the burned gas, or were obstructed by turbulence and the partial quenching was observed. Fractal analysis was performed for the flame boundaries of the obtained images. The values of the fractal dimension under lean limit conditions reached 1.45 larger than that of non-reaction turbulence.

Original languageEnglish
Pages (from-to)1509-1514
Number of pages6
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Issue number682
Publication statusPublished - Jun 2003
Externally publishedYes



  • Combustion Phenomena
  • Flame
  • Fractal
  • Internal Combustion Engine
  • Laser Tomography
  • Lean Burn
  • Premixed Combustion
  • Turbulent Flame

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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