The formation and combustion rates of soot particles in turbulent flames are studied. A modification of two-step soot formation model in laminar flames with the spontaneous formation rate of radical nuclei has been tested on two propane/air turbulent diffusion flames. In order to evaluate the predictions, the new measurements of the mean soot concentration field in a turbulent jet propane/air diffusion flame are employed, along with data by Nishida. The proposed model gives fair predictions for soot concentration of two flames, and the soot formation rate in turbulent flames can be predicted simply by the application of a laminar rate model and local time-mean conditions.
