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Wavelet-Adapted Sub-grid Scale Models for LES

  • J. A. Denev
  • C. J. Falconi
  • J. Fröhlich
  • H. Bockhorn
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 110)

Abstract

The paper presents two novel turbulent models for LES based on a wavelet decomposition. This approach, denoted WALES, is simple and easy to implement. Tests on a number of flows using grids with different resolution near walls show that the models exhibit the same quality as the Smagorinsky model without the need of wall functions or near-wall damping. In the paper the basic wavelet framework and two such models are described in detail. Physical benefits of the models due to the use of wavelets are discussed. Results obtained with the models are compared to those using the Smagorinsky model, to experimental results and to results from Direct Numerical Simulations. The agreement achieved is generally good.

Keywords

Large Eddy Simulation Direct Numerical Simulation Azimuthal Velocity Smagorinsky Model Wavelet Detail 
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.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • J. A. Denev
    • 1
  • C. J. Falconi
    • 1
  • J. Fröhlich
    • 2
  • H. Bockhorn
    • 1
  1. 1.Institute for Technical Chemistry und Polymer ChemistryUniversity of Karlsruhe (TH)KarlsruheGermany
  2. 2.Institute of Fluid MechanicsTechnical University of DresdenDresdenGermany

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