Combustion LES for premixed and diffusion flames
by Michael Dusing, Andreas Kempf, Felix Flemming, Amsini Sadiki, Johannes Janicka
Progress in Computational Fluid Dynamics, An International Journal (PCFD), Vol. 5, No. 7, 2005

Abstract: This paper demonstrates the ability of large-eddy simulation (LES) to accurately predict turbulent combustion. A non-premixed bluff-body flame was simulated, relying on the conserved scalar approach and the laminar flamelet concept. The results were found to agree well with experimental data. A premixed flame, stabilised behind a rearward-facing step, was investigated with LES and a filtered G-equation model. The results were compared to experimental data to assess the accuracy of the approach. The filtered G-equation model was chosen based on the generalised regime diagram for turbulent combustion, which considers the influence of the LES filter width. A combination of both simulation methods introduced here gives the possibility to simulate partially premixed combustion.

Online publication date: Mon, 18-Jul-2005

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