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On the Interface Positioning in a Zonal Detached Eddy Simulation (ZDES) of a Spatially Developing Flat Plate Turbulent Boundary Layer

  • Nicolas RenardEmail author
  • Sébastien Deck
Conference paper
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 130)

Abstract

Hybrid RANS/LES methods may be used as Wall-Modeled Large Eddy Simulations to predict wall-bounded turbulent dynamics at a computational cost compatible with complex applications. The present study investigates the sensitivity to the RANS/LES interface position in one such method, the mode III of the ZDES technique (see Deck, Theor Comput Fluid Dyn 26(6):523–550, 2012 [2]). A canonical spatially developing flat plate boundary layer is simulated over a wide range of Reynolds numbers \(3{,}150\,\le \,Re_\theta \,\le \,14{,}000\) at a low Mach number enabling comparisons with the incompressible case. The method is assessed on relatively coarse meshes and is compared to a Wall-Resolved Large Eddy Simulation together with experimental data. The influence of the interface position on skin friction prediction and the ratio of the resolved to modeled turbulent friction is discussed in the framework of the FIK identity (Fukagata, K., Iwamoto, K., Kasagi, N.: Contribution of Reynolds stress distribution to the skin friction in wall-bounded flows. Phys. Fluids 14, L73 (2002) [7]). The mean velocity and Reynolds stresses profiles are analyzed, including spectral analysis of the streamwise velocity and Reynolds shear stress.

Keywords

Large Eddy Simulation Streamwise Velocity Coarse Mesh Reynolds Shear Stress Interface Position 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The authors wish to thank all the people involved in the past and present evolution of the FLU3M code. Pierre Sagaut, Romain Laraufie and Pierre-Élie Weiss are warmly acknowledged for very stimulating discussions. The fine mesh WRLES computation was made thanks to the HPC resources from GENCI-CINES (Project ZDESWALLTURB, Grant 2012-[c2012026817]). The thesis of Nicolas Renard is partly funded by the French defense procurement agency DGA.

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.ONERAThe French Aerospace LabMeudonFrance

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