Blowout of turbulent diffusion flames

James E. Broadwell, Werner Dahm, M. Godfrey Mungal

Research output: Contribution to journalArticle

123 Citations (Scopus)

Abstract

A simple description has been formulated of the mechanisms governing the stability of turbulent diffusion flames. It is based upon the nature of the large scale motions that have been observed in turbulent jets and includes a process for maintaining a stable flame. An analysis, based on the proposed model, leads to a single parameter which determines the blowout velocity of pure fuels and of fuels diluted with air and with CO2. The parameter is the ratio of two times: a characteristic chemical reaction time and a time associated with the mixing of reentrained hot products into fresh reactants. The agreement with a set of experimental observations for both pure and diluted gases is good.

Original languageEnglish (US)
Pages (from-to)303-310
Number of pages8
JournalSymposium (International) on Combustion
Volume20
Issue number1
DOIs
StatePublished - 1985
Externally publishedYes

Fingerprint

turbulent diffusion
turbulent flames
diffusion flames
turbulent jets
reaction time
Chemical reactions
flames
chemical reactions
Gases
air
products
Air
gases

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Fluid Flow and Transfer Processes
  • Physical and Theoretical Chemistry
  • Energy Engineering and Power Technology
  • Fuel Technology
  • Mechanical Engineering

Cite this

Blowout of turbulent diffusion flames. / Broadwell, James E.; Dahm, Werner; Mungal, M. Godfrey.

In: Symposium (International) on Combustion, Vol. 20, No. 1, 1985, p. 303-310.

Research output: Contribution to journalArticle

Broadwell, James E. ; Dahm, Werner ; Mungal, M. Godfrey. / Blowout of turbulent diffusion flames. In: Symposium (International) on Combustion. 1985 ; Vol. 20, No. 1. pp. 303-310.
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