Abstract
With the constant increase in super-computing power, Large-Eddy Simulation (LES) has become an important tool for the modeling and the understanding of flame dynamics in complex burners. A fine description of the reaction layers in such devices requires fine meshes and the resolution of a broad range of turbulent scales. Unfortunately, extracting the large-scale features is not trivial. To this aim, implicit high-order filters that are based on simple low-order finite-volume operators have been proposed. These filters are applied in the LES of the MERCATO burner in order to study the complex interactions of the Precessing-Vortex Core, a large vortex typical of swirl burners, and a spray flame. High-order filters conveniently enable the analysis of the flame anchoring and its dynamics in the wake of the PVC.
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Acknowledgements
Computational time was provided by GENCI (Grand Equipement National de Calcul Intensif) under the allocation x20152b6880, and all simulations were performed on the HPC ressources of IDRIS, TGCC and CINES.
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Guedot, L., Lartigue, G., Moureau, V. (2018). Modeling and Analysis of the Interactions of Coherent Structures with a Spray Flame in a Swirl Burner. In: Deville, M., et al. Turbulence and Interactions. TI 2015. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 135. Springer, Cham. https://doi.org/10.1007/978-3-319-60387-2_2
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DOI: https://doi.org/10.1007/978-3-319-60387-2_2
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