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High-Fidelity CFD Simulations of Instabilities, Transition and Turbulence using High-Order Methods and Parallel Computing

D. DRIKAKIS, M. HAHN, B. THORNBER, E. SHAPIRO

Abstract


Time-accurate modelling of unstable and turbulent flows is one of the most challenging problems in computational science and engineering. Computational requirements of turbulent flow simulations continue to push the hardware boundaries. Fully resolved Direct Numerical Simulation (DNS) is still out of reach for most practical applications, thus Large Eddy Simulation (LES) has emerged as viable alternative. This paper presents the parallel implementation of implicit Large Eddy Simulation (ILES) for compressible turbulent flows. The accuracy, scalability and computational requirements of ILES are demonstrated for transitional and turbulent, single and multi-component flows on two different HPC facilities.

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