Propagation of lean premixed polydispersive spray flames

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

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


A new numerical study of the propagation of laminar lean premixed polydisperse spray flames in a two-dimensional channel is presented. A constant density model is adopted in order to isolate thermal-diffusional effects through elimination of instabilities of the Darrieus-Landau type. Due to the numerical solution linearization is not necessary for examining flame instabilities. The impact of the initial size distribution on the stability of flame propagation is investigated for two quite different initial size distributions having the same Sauter mean diameter. It is found that the initial droplet size distribution can exert a strong influence on the average flame speed, both spatial and time-wise instabilities and their onset. In addition, even for the same size distribution the mode of flame propagation is influenced by the actual initial perturbation and, here, was shown to be attracted to one of two unsteady limiting modes, (unsteady limiting modes).

Original languageEnglish
Title of host publication51st Israel Annual Conference on Aerospace Sciences 2011
Number of pages10
StatePublished - 2011
Event51st Israel Annual Conference on Aerospace Sciences 2011 - Tel-Aviv and Haifa, Israel
Duration: 23 Feb 201124 Feb 2011

Publication series

Name51st Israel Annual Conference on Aerospace Sciences 2011


Conference51st Israel Annual Conference on Aerospace Sciences 2011
CityTel-Aviv and Haifa


  • Flame propagation
  • Polydisperse lean spray
  • Premixed spray
  • Stability


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