Cellular structures on premixed flames in a uniform laminar flow

  • J. Quinard
  • G. Searby
  • L. Boyer
Conference paper
Part of the Lecture Notes in Physics book series (LNP, volume 210)


These results show a good qualitative agreement with the model of a threefold instability mechanism. The marginal stability is crossed when the strength of the hydrodynamic instability is increased following an increase in the normal flame speed. The critical velocity is lowered by decreasing the Lewis number due to the destabilizing influence of transverse mass fluxes. As expected, the critical wavelength is principally related to the critical flame speed and does not vary significantly from one fuel to another. This analysis has also led to a good estimation of the behavior of stable flame fronts in a weakly turbulent flow /11/.

However, the quantitative discrepancy evident in figure 8 may result from an over-simplification of the chemical kinetic scheme in the model (overall one-step reaction), from finite size effects in the burner or even from the neglect of non linear effects which appear as soon as the threshold is crossed /12/.


Equivalence Ratio Flame Front Marginal Stability Lewis Number Premix Flame 
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Copyright information

© Springer-Verlag 1984

Authors and Affiliations

  • J. Quinard
    • 1
  • G. Searby
    • 1
  • L. Boyer
    • 1
  1. 1.Département de Combustion Laboratoire de Dynamique et Thermophysique des FluidesUniversité de Provence, centre St JérômeMarseille Cedex 13

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