Burke—Schumann Flame with Streamwise and Preferential Diffusion

S. H. Chung, C. K. Law

Research output: Contribution to journalArticlepeer-review

80 Scopus citations


The classical diffusion flame model of Burke and Schumann is extended to include the effects of both streamwise and preferential diffusion. The study first identifies a Lewis-number-weighted coupling function as the proper one to use in formulations involving non-unity Lewis numbers. A perturbation technique is then developed for the realistic situation of near-unity Lewis number flows. Results show that, depending on the effective Lewis numbers of fuel and oxidizer, the flame temperature may vary either monotonically or non-monotonically along the flame sheet, and thereby suggesting the possibilities of tip opening, and tip intensification, as well as partial and complete flame blow-off.

Original languageEnglish (US)
Pages (from-to)21-46
Number of pages26
JournalCombustion science and technology
Issue number1-2
StatePublished - May 1 1984
Externally publishedYes

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology
  • General Physics and Astronomy


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