Abstract
Three different synthetic turbulence methods are assessed in hybrid RANS/LES simulations with the unstructured compressible flow solver DLR-TAU. Fluctuations computed with either the Synthetic-Eddy Method, its divergence-free version, or the Synthetic-Turbulence Generator are injected via momentum sources into the flow field. In a flat plate flow, the latter method yields minimal deviations from reference data when combined with suited volume forcing, while the induced noise is not larger than in the other methods. In a mixing co-flow, all approaches yield decent predictions of the flow development apart from a slightly too high mixing rate.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Jarrin, N., Prosser, R., Uribe, J.C., Benhamadouche, S., Laurence, D.: Reconstruction of turbulent fluctuations for hybrid RANS/LES simulations using a Synthetic-Eddy method. Int. J. Heat Fluid Flow 30(3), 435–442 (2009)
Poletto, R., Revell, A., Craft, T., Jarrin, N.: Divergence free synthetic eddy method for embedded LES inflow boundary conditions. In: Seventh International Symposium On Turbulence and Shear Flow Phenomena (TSFP-7), Ottawa, Canada (2011)
Adamian, D., Travin, A.: An efficient generator of synthetic turbulence at rans-les interface in embedded LES of wall-bounded and free shear flows. In: Kuzmin, A. (ed.) Computational Fluid Dynamics 2010, 739–744. Springer, Berlin Heidelberg (2011)
Schwamborn, D., Gardner, A.D., von Geyr, H., Krumbein, A., Lüdeke, H., Stürmer, A.: Development of the DLR TAU-Code for aerospace applications. In: International Conference on Aerospace Science and Technology, pp. 26–28. Bangalore, India (2008)
Pot, P.J.: A Wake Boundary Layer Mixing Experiment. Technical report, NLR (1979)
Probst, A.: Implementation and assessment of the Synthetic-Eddy Method in an unstructured compressible flow solver. In: Progress in Hybrid RANS-LES Modelling. NNFMMD, vol. 137, pp. 91–101. Springer International Publishing (2018)
Francois, D.G., Radespiel, R., Probst, A.: Forced synthetic turbulence approach to stimulate resolved turbulence generation in embedded LES. In: Progress in Hybrid RANS-LES Modelling. NNFMMD, vol. 130. Springer International Publishing (2015)
Löwe, J., Probst, A., Knopp, T., Kessler, R.: Low-dissipation low-dispersion second-order scheme for unstructured finite-volume flow solvers. AIAA J. 54(10), 2961–2971 (2016)
Shur, M.L., Spalart, P.R., Strelets, M.K., Travin, A.K.: A hybrid RANS-LES approach with delayed-DES and wall-modelled LES capabilities. Int. J. Heat Fluid Flow 29(6), 406–417 (2008)
Laraufie, R., Deck, S.: Assessment of Reynolds stresses tensor reconstruction methods for synthetic turbulent inflow conditions, Application to hybrid RANS/LES methods. Int. J. Heat Fluid Flow 42, 68–78 (2013)
Schlatter, P., Örlü, R.: Assessment of direct numerical simulation data of turbulent boundary layers. J. Fluid Mech. 659, 116–126 (2010)
Nagib, H.M., Chauhan, K.A., Monkewitz, P.A.: Approach to an asymptotic state for zero pressure gradient turbulent boundary layers. Philos. Trans. R. Soc. A: Math. Phys. Eng. Sci. 365, 755–770 (2007)
Shur, M.L., et. al: Improved Embedded Approaches. In: Go4Hybrid: Grey Area Mitigation for Hybrid RANS-LES Methods, Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol. 134, pp. 51–87 (2017)
Deck, S., Weiss, P., Renard, N.: A rapid and low noise switch from RANS to WMLES on curvilinear grids with compressible flow solvers. J. Comput. Phys. 363, 231–255 (2018)
Acknowledgements
The STG implementation in TAU including the blending function for variable volume forcing was provided by Daniela G. François, now DLR Göttingen. The mixing co-flow was defined as common test case in the GARTEUR Action Group 54 “RaLESin”.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2020 Springer Nature Switzerland AG
About this paper
Cite this paper
Probst, A., Ströer, P. (2020). Comparative Assessment of Synthetic Turbulence Methods in an Unstructured Compressible Flow Solver. In: Hoarau, Y., Peng, SH., Schwamborn, D., Revell, A., Mockett, C. (eds) Progress in Hybrid RANS-LES Modelling . Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 143. Springer, Cham. https://doi.org/10.1007/978-3-030-27607-2_15
Download citation
DOI: https://doi.org/10.1007/978-3-030-27607-2_15
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-27606-5
Online ISBN: 978-3-030-27607-2
eBook Packages: EngineeringEngineering (R0)