Abstract
LES computations of shock/homogeneous turbulence have been performed at two different Mach numbers (1.2 and 2) with four different SGS models (Smagorinsky Model, Mixed Scale Model, Dynamic Smagorinsky Model, Dynamic Mixed Model). The code was successfully validated by comparisons with the DNS results of Lee et al. and, from a numerical point of view, the hybrid flux approach presented here demonstrates a very satisfactory behaviour. The general conclusion of this study is that LES is efficient to compute such interaction only if the mesh is fine enough in the shock vicinity to capture shock corrugation. Even with such a requirement, LES reduces dramatically the computational effort necessary to simulate the shock/homogeneous turbulence interaction with respect to DNS. Dynamic SGS models are found to improve markedly the quality of the results when compared to simple models like Smagorinsky’s.
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© 1999 Springer Science+Business Media Dordrecht
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Garnier, E., Sagaut, P., Deville, M. (1999). Large-Eddy Simulation of Shock/Homogeneous Turbulence Interaction. In: Voke, P.R., Sandham, N.D., Kleiser, L. (eds) Direct and Large-Eddy Simulation III. ERCOFTAC Series, vol 7. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-9285-7_11
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DOI: https://doi.org/10.1007/978-94-015-9285-7_11
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