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Characterization of turbulent premixed flame structure for mathematical modeling of combustion

  • Akira Yoshida
3. Flame Modeling Relevant to Turbulent Combustion
Part of the Lecture Notes in Physics book series (LNP, volume 299)

Abstract

Measurements of wrinkle size are made extensively in laminar and turbulent premixed flames to find out the origin of flame wrinkling in turbulent premixed flames, and conclusions are summarized as follows:

  1. (1)

    Two types of instability are observed on the laminar flame front stabilized by a flame holder. These instabilities are caused by the strong shearing stress developed by the high velocity gradient between the unburned mixture and burned gas.

     
  2. (2)

    The laminar flame instability plays an predominant role in flame wrinkling and the unburned mixture turbulence triggers the two types of laminar flame instability in the turbulent premixed flames.

     
  3. (3)

    It is found qualitatively that the mixture turbulence broadens the wrinkle size distributions.

     

Keywords

Equivalence Ratio Turbulent Combustion Laminar Flame Damkohler Number Turbulent Premix Flame 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

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Copyright information

© Springer-Verlag 1988

Authors and Affiliations

  • Akira Yoshida
    • 1
  1. 1.Department of Mechanical EngineeringTokyo Denki UniversityTokyoJapan

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