The non-premixed reaction of fuel with air in a mixing layer is studied using DNS. The situation is a model for the mixing-controlled combustion in a Diesel engine. We show that the combustion region can be comparably passive with respect to relatively large scale aerodynamic instabilities. However the reaction decreases the small scale turbulent energy. A flamelet analysis shows differences between two and three dimensional situations. In a first analysis, performed for the two dimensional case, no correlation of the flame-normal compressive strain rate with a flamelet-like behavior is observed.
|Title of host publication||Modern simulation strategies for turbulent flow|
|Place of Publication||Philadelphia|
|Publisher||R.T. Edwards Publishers|
|Publication status||Published - 2001|
Bastiaans, R. J. M., Somers, L. M. T., & Lange, de, H. C. (2001). DNS of non-premixed combustion in a compressible mixing layer. In B. J. Geurts (Ed.), Modern simulation strategies for turbulent flow (pp. 247-262). R.T. Edwards Publishers.