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Progress in Hybrid RANS-LES Modelling pp 481–491Cite as

Scale-Resolving Simulations of Wall-Bounded Flows with an Unstructured Compressible Flow Solver

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Part of the book series: Notes on Numerical Fluid Mechanics and Multidisciplinary Design ((NNFM,volume 130))

Abstract

The fully-developed channel flow at \(Re_\tau \approx 395\) is used to validate scale-resolving simulations with the unstructured compressible DLR-TAU code. In a sensitivity study based on wall-resolved LES a low-dissipative spatial scheme is derived, which allows to predict the channel flow in fair agreement with DNS. Then the scheme is used in Improved Delayed DES computations in order to assess TAU’s capabilities for wall-modelled LES. As pointed out in a grid study, a tangential resolution of about \(\varDelta x^+ \approx 40\), \(\varDelta z^+ \approx 20\) is required to obtain acceptable mean-flow results. Besides, the combination of IDDES with a vorticity-dependent subgrid filter width is shown to yield consistent results, and the effect of the underlying RANS approach up to Reynolds-stress modelling is analysed.

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Author information

Authors and Affiliations

  1. DLR (German Aerospace Center), Bunsenstr. 10, 37073, Göttingen, Germany

    Axel Probst & Silvia Reuß

Authors
  1. Axel Probst
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  2. Silvia Reuß
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Corresponding author

Correspondence to Axel Probst .

Editor information

Editors and Affiliations

  1. Aerospace Engineering Department, Texas A&M University, College State, Texas, USA

    Sharath Girimaji

  2. Werner Haase Aeronautics Consultants, Neubiberg, Bayern, Germany

    Werner Haase

  3. Div Information & Aeronautical Syst, Swedish Defence Research Agency FOI, Stockholm, Sweden

    Shia-Hui Peng

  4. Center of Computer Applications in Aerospace Science and Engineering, DLR, Institut für Aerodynamik und Strömungstechnik, Göttingen, Germany

    Dieter Schwamborn

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© 2015 Springer International Publishing Switzerland

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Probst, A., Reuß, S. (2015). Scale-Resolving Simulations of Wall-Bounded Flows with an Unstructured Compressible Flow Solver. In: Girimaji, S., Haase, W., Peng, SH., Schwamborn, D. (eds) Progress in Hybrid RANS-LES Modelling. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 130. Springer, Cham. https://doi.org/10.1007/978-3-319-15141-0_39

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  • DOI: https://doi.org/10.1007/978-3-319-15141-0_39

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-15140-3

  • Online ISBN: 978-3-319-15141-0

  • eBook Packages: EngineeringEngineering (R0)

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