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Progress in Turbulence VI pp 83–86Cite as

Analysis of a Hybrid RANS/LES Model Using RANS Reconstruction

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Part of the book series: Springer Proceedings in Physics ((SPPHY,volume 165))

Abstract

The Hybrid RANS/LES method proposed is based on the hybrid filter approach introduced by Germano in 2004. In this work, instead of using two explicit models respectively for LES and RANS, we use only a model for LES and we reconstruct the RANS field exploiting the properties of hybrid filter. The reconstruction is obtained from the resolved velocity and the LES subgrid stress tensor. The model has been implemented using a variational approach in a DG-FEM framework and tested for the turbulent channel flow test case. Different configurations for hybrid terms have been compared with DNS data and with pure LES results.

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References

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Acknowledgments

We acknowledge that the results of this research have been achieved using the PRACE Research Infrastructure resource provided by NIIF (Hungary), within the project DECI-11 HyDiG.

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Authors and Affiliations

  1. Dip. di Scienze e Tecnologie Aerospaziali, Politecnico di Milano, Milan, Italy

    M. Nini & A. Abbà

  2. Department of Civil and Environmental Engineering, Duke University, Durham, NC, USA

    M. Germano

  3. Numerische Methoden in der Plasmaphysik, Max-Planck-Institut für Plasmaphysik, Munich, Germany

    M. Restelli

Authors
  1. M. Nini
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  2. A. Abbà
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  3. M. Germano
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  4. M. Restelli
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Corresponding author

Correspondence to M. Nini .

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Editors and Affiliations

  1. Inst of Phys, AG TWiSt, ForWind-CWER, Carl-von-Ossietzky University Oldenburg, Oldenburg, Germany

    Joachim Peinke

  2. Institute of Physics and ForWind, University of Oldenburg, Oldenburg, Niedersachsen, Germany

    Gerrit Kampers

  3. Department of Mechanical Engineering, TU Darmstadt, Darmstadt, Germany

    Martin Oberlack

  4. Department of Mechanical Engineering, TU Darmstadt, Darmstadt, Germany

    Marta Wacławczyk

  5. Dept of Indus Engg,Alma Mater Studiorum, Università di Bologna, Forlì, Italy

    Alessandro Talamelli

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© 2016 Springer International Publishing Switzerland

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Nini, M., Abbà, A., Germano, M., Restelli, M. (2016). Analysis of a Hybrid RANS/LES Model Using RANS Reconstruction. In: Peinke, J., Kampers, G., Oberlack, M., Wacławczyk, M., Talamelli, A. (eds) Progress in Turbulence VI. Springer Proceedings in Physics, vol 165. Springer, Cham. https://doi.org/10.1007/978-3-319-29130-7_15

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