A Study on Turbulent Premixed Flames in a Closed Vessel by Analyzing Flame Photographs

Yoshisuke Hamamoto, Masaaki Izumi, Eiji Tomita

Research output: Contribution to journal › Article › peer-review

Abstract

The characteristics of roughness of a turbulent flame front in a disc-type combustion chamber were determined with high-speed schlieren photography and image analyzing. The correlations between the characteristics of roughness of the turbulent flame front and the turbulence characteristics or turbulent burning velocity were discussed. The main results are as follows: (1) the RMS value “a” and integral scale “Lf” of the flame front roughness are dependent on the turbulence intensity and integral spatial scale, (2) the power spectrum of the flame front roughness is similar to that of turbulent flow, and the microscale of the flame front roughness is close to the Taylor microscale of turbulence and (3) under the condition of very low turbulence, the ratio of turbulent burning velocity and laminar burning velocity, ST/SL, is proportional to [Formula Omitted].

Original languageEnglish
Pages (from-to)2214-2218
Number of pages5
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume54
Issue number504
DOIs
Publication statusPublished - 1988

Keywords

  • Combustion
  • Image Analyzing
  • Roughness of Flame Front
  • Turbulent Burning Velocity
  • Turbulent Flame

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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