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Direct and Large-Eddy Simulation XI pp 75–82Cite as

On the Development of an Implicit High-Order Discontinuous Galerkin Solver for a Hybrid RANS-LES Model

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Part of the book series: ERCOFTAC Series ((ERCO,volume 25))

Abstract

Recent years have seen an ever-increasing interest in turbulence models able to go beyond the limited predictive capability of the Reynolds-averaged Navier–Stokes (RANS) formulation. In the range of moderate Reynolds numbers, availability of large HPC resources now allows to employ Large Eddy Simulation (LES) also in complex flow applications. In this context, the practice of an implicit LES (ILES) based on the Discontinuous Galerkin (DG) method showed to be very promising due to the good dispersion and dissipation properties of DG methods. However, to date, characteristic Reynolds numbers of many industrial applications are too large for a fully resolved LES. For these applications the use of a hybrid RANS-LES model or a wall modelled LES approach seems mandatory. In hybrid RANS-LES models the RANS equations are active close to solid walls, where LES would be prohibitively costly, while LES is used in regions of separated flow where larger eddies can be resolved.

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Acknowledgements

The results reported in this paper have been achieved using the PRACE Research Infrastructure resource MARCONI-KNL based at CINECA, Casalecchio di Reno, Italy, within the Project “Discontinuous Galerkin method for the X-LES of TRAnsonic flows” (DGXTRA).

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Authors and Affiliations

  1. Dipartimento di Ingegneria e Scienze Applicate, Università degli Studi di Bergamo, Dalmine, (BG), Italy

    F. Bassi, L. Botti, A. Colombo & F. Massa

  2. Dipartimento di Ingegneria Meccanica e Industriale, Università degli Studi di Brescia, Brescia, Italy

    A. Ghidoni & G. Noventa

Authors
  1. F. Bassi
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  2. L. Botti
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  3. A. Colombo
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  4. A. Ghidoni
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  5. F. Massa
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  6. G. Noventa
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Corresponding author

Correspondence to A. Colombo .

Editor information

Editors and Affiliations

  1. Dipartimento di Ingegneria Civile e Industriale, Università di Pisa, Pisa, Italy

    Maria Vittoria Salvetti

  2. Dipartimento di Ingegneria Civile e Ambientale, Università degli studi di Trieste, Trieste, Italy

    Vincenzo Armenio

  3. Institut für Strömungsmechanik, Technische Universität Dresden, Dresden, Germany

    Jochen Fröhlich

  4. Faculty of Electrical Engineering, Mathematics and Computer Science, Multiscale Modeling and Simulation, University of Twente, Enschede, The Netherlands

    Bernard J. Geurts

  5. Department of Mechanical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands

    Hans Kuerten

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Bassi, F., Botti, L., Colombo, A., Ghidoni, A., Massa, F., Noventa, G. (2019). On the Development of an Implicit High-Order Discontinuous Galerkin Solver for a Hybrid RANS-LES Model. In: Salvetti, M., Armenio, V., Fröhlich, J., Geurts, B., Kuerten, H. (eds) Direct and Large-Eddy Simulation XI. ERCOFTAC Series, vol 25. Springer, Cham. https://doi.org/10.1007/978-3-030-04915-7_11

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  • DOI: https://doi.org/10.1007/978-3-030-04915-7_11

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-04914-0

  • Online ISBN: 978-3-030-04915-7

  • eBook Packages: EngineeringEngineering (R0)

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