Reaction rates in diffusion flames

✍ Scribed by R.W. Bilger

• Publisher: Elsevier Science
• Year: 1977
• Tongue: English
• Weight: 553 KB
• Volume: 30
• Category: Article
• ISSN: 0010-2180
• DOI: 10.1016/0010-2180(77)90076-1

✦ Synopsis

A transformation of the species conservation equations is used to analyse experimental data on laminar diffusion flames to obtain chemical reaction rates. The method uses only composition and temperature measurements, the velocity field not being required. The method relies on the molecular species concentration being insensitive to variables other than the mixture fraction or other measures of stoichiometry. Analysis of data in a diffusion flame formed from fuel flowing from a porous cylinder indicates that this is the case, an empirical finding of some importance in itself. Reaction rates determined in this way are found to be in close agreement with those determined from the full species conservation equation. The rate constants, computed by using global mechanisms developed for well-stirred and plug flow reactors, indicate that these mechanisms are probably not appropriate for diffusion flames.