Abstract
The process of auto-ignition in a non-premixed, homogeneous and isotropic turbulent medium is considered. The governing pdf transport equation is simulated via a Monte Carlo method. It is found that the pdf evolution depends on the relative magnitudes of two time scales, namely, that of turbulent mixing and of chemical reaction. Calculations made for a wide range of these time scales show that at least four different regimes of auto-ignition may be identified. These are classified into premixed and non-premixed type, and are located on a Damköhler number diagram.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Pope, S.B.: Prog. Energy. Combust. Sci., 11, 119 (1985).
Dopazo, C., and O'Brien, E.E.: Acta Astronautica, 1, 1239 (1974).
Bruel, P., Rogg, B. and Bray, K.N.C.: Twenty-third Symposium (International) on Combustion, p.759, The Combustion Institute, 1990.
Lakshmisha, K.N., Zhang, Y., Rogg, B. and Bray, K.N.C.: Twenty-fourth Symposium (International) on Combustion, (in press), The Combustion Institute, 1992.
Janicka, J. and Kollmann, W.: Seventeenth Symposium (International) on Combustion, p.421, The Combustion Institute, 1978.
Janicka, J., Kolbe, W., and Killmann, W.: J. Nonequilib. Thermo., 4, 47 (1979).
Borghi, R.: Prog. Energy. Combust. Sci., 14, 245 (1988).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Lakshmisha, K.N., Rogg, B. & Bray, K.N.C. On the regimes of auto-ignition in a turbulent medium. Appl. Sci. Res. 51, 519–524 (1993). https://doi.org/10.1007/BF01082585
Issue Date:
DOI: https://doi.org/10.1007/BF01082585