Abstract
This paper aims at investigating the effect of upstream turbulence (for instance coming from the engine’s internal geometry) on the jet flow development. Simulations are performed using ZDES [4] combined with synthetic turbulence generation methods. Two cases are studied: an incompressible, single-stream jet and a compressible dual-stream one. It is shown that the upstream turbulence reduces the RANS-to-LES transition and improves the prediction of the location of the shock-cells and global jet flow development, which advocates a systematic consideration of realistic nozzle exit conditions in eddy-resolving simulations.
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Acknowledgements
The simulations presented in Sect. 3 were performed using HPC resources from GENCI-TGCC (Grant 2014-t20142a7215).
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Gand, F., Verrière, J., Deck, S. (2018). Effect of Upstream Turbulence on Single and Dual-Stream Jets. Assessment of Zonal Detached Eddy Simulation (ZDES). In: Hoarau, Y., Peng, SH., Schwamborn, D., Revell, A. (eds) Progress in Hybrid RANS-LES Modelling. HRLM 2016. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 137. Springer, Cham. https://doi.org/10.1007/978-3-319-70031-1_6
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