Oscillatory propagation of a rich premixed spray flame

L. S. Kagan, J. B. Greenberg, G. I. Sivashinsky*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Experimental evidence points to a rich variety of physical scenarios that arise when a laminar flame propagates through a pre-mixture of evaporating liquid fuel and a gaseous oxidant. In this paper new results of time-dependent numerical simulations of rich off-stoichiometric spray flame propagation in a two-dimensional channel are presented. A constant density model is adopted, thereby eliminating the Darrieus-Landau instability. It is demonstrated that there exists a narrow band of vaporization Damkohler numbers (the ratio of a characteristic flow time to a characteristic evaporation time) for which the flame propagation is oscillatory. For values outside this range steady state propagation is attained but with a curved (cellular) flame front. The critical range for the non-steady propagation is also found to be a function of the Lewis number of the deficient reactant.

Original languageEnglish
Pages (from-to)36-45
Number of pages10
JournalMathematical Modelling of Natural Phenomena
Issue number5
StatePublished - Jan 2010


  • oscillatory combustion
  • spray flame


Dive into the research topics of 'Oscillatory propagation of a rich premixed spray flame'. Together they form a unique fingerprint.

Cite this