Abstract
Numerical simulation results are presented for the turbulent piloted jet diffusion flame ‘Delft Flame III’. In this flame, which is one of the target flames of the International Workshop on Measurements and Computations of Turbulent Nonpremixed Flames (TNF), effects of turbulence-chemistry interaction are strong and modelling the turbulence-chemistry interaction is a challenge. After an outline of the theoretical framework, a comparison is presented of results with on the one hand the velocity-scalar transported probability density function (PDF) approach with reduced chemistry (ILDM) and on the other hand the scalar PDF approach with detailed chemistry (C 1-mechanism). The same micromixing model (modified coalescence-dispersion model, CD) is used in both studies. The reasons for the significantly better prediction of the mean temperature field by the scalar PDF calculations are discussed. Results of other micromixing models are briefly mentioned. To cite this article: D. Roekaerts et al., C. R. Mecanique 334 (2006).
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