- Author
- Villasenor, R. | Dennedy, I. M.
- Title
- Soot Formation and Oxidation in Laminar Diffusion Flames.
- Coporate
- California Univ., Davis
- Sponsor
- National Institute of Standards and Technology, Gaithersburg, MD
- Contract
- NIST-GRANT-NANDB0D-1055
- Book or Conf
- Combustion Institute, Symposium (International) on Combustion, 24th. July 5-10, 1992, Combustion Institute, Pittsburgh, PA, Sydney, Australia, 1023-1030 p., 1992
- Keywords
- combustion | laminar flames | diffusion flames | soot formation | oxidation
- Identifiers
- governing rates
- Abstract
- A numerical model of soot formation and oxidation has been examined in terms of the integrated soot volume fraction across a series of laminar diffusion flames. Agreement with experiments was found to be good. A comparison of the conversion rate of carbon to soot in the flames was also satisfactory. OH was shown to be the dominant oxidizer of soot low in the co-flow axisymmetric flames but as the flame tip was approached the calculations suggested that O₂ became more important. Both species were important to the correct prediction of soot profiles. The rate of OH loss on soot was found to be comparable to the net rates of OH loss and formation by flame chemistry. These results indicate that soot may be a significant sink of OH and may, in fact, lead to local extinction of the reaction zone near the flame tip.