Modelling of turbulent reacting flows is of relevance for several industrial applications like aero-engines. The RANS based flow solver NATUR was specifically developed at Ecole Centrale de Lyon (ECL), to be used by the French aero-engine designer SNECMA. A preliminary validation of the numerical tool was successfully achieved through the computation of the combustion process in a real 3D combustor of SNECMA.
Combustion of premixed air-propane at atmospheric pressure, 43k to load enlargement Fig.12: Combustion of premixed air-propane at atmospheric pressure. Computations performed by A. Page for SNECMA (Page and Buffat, 1997)

Dynamical Smagorinsky model, 30k to load enlargement Fig.13: LES of 3D temporal mixing layer at Re=50.
Dynamical Smagorinsky model.
Large-Eddy Simulation is a promising methodology offering clear prospects for future applications. The principal advantage of the method over statistical turbulence models is its capability to distinguish between turbulent structures of different scales. One of the first applications of the LES-code Nadia developed at ECL consists of the computation of a 3D mixing layer at a low Reynolds number (Re=50).

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