Passive scalar interface in a spatially evolving mixing layer (A. Attili and D. Denker)

Quartz nozzle sampling (D. Felsmann)

Dissipation element analysis of a planar diffusion flame (D. Denker)

Turbulent/non-turbulent interface in a temporally evolving jet (D. Denker)

Dissipation elements crossing a flame front (D. Denker and B. Hentschel)

Particle laden flow (E. Varea)

Turbulent flame surface in non-premixed methane jet flame (D. Denker)

DNS of primary break up (M. Bode)

Diffusion flame in a slot Bunsen burner (S. Kruse)

Various quantities in spatially evolving jet diffusion flame (D. Denker)

Experimental and Theoretical Research on Soot Formation


Basics

Soot formation in technical combustion systems is a complex process that is influenced by pressure, flow field and above all by numerous chemical reactions. Because of this strong coupling, a detailed description of gas phase chemistry is necessary in order to model sooting flames. The main aim of this work is to analyse and further develop existing detailed reaction models through the comparison with measurements. For this fundamental investigation a laminar counter flow configuration is used. The use of the results for relevant turbulent combustion systems as for example Diesel engines is possible by use of the flamelet concept. The core of the soot model being investigated is taken from the PHD-thesis of F. Mauß (Entwicklung eines kinetischen Modells der Rußbildung mit schneller Polymerisation, RWTH 1998). After good agreement between measurements and modelling had been observed for most parameters, the model is extended to describe the statistics of particle sizes in greater detail.