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Wall-modeled large eddy simulation of turbulent channel flow at high Reynolds number using the von Karman length scale

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Abstract

The von Karman length scale is able to reflect the size of the local turbulence structure. However, it is not suitable for the near wall region of wall-bounded flows, for its value is almost infinite there. In the present study, a simple and novel length scale combining the wall distance and the von Karman length scale is proposed by introducing a structural function. The new length scale becomes the von Karman length scale once local unsteady structures are detected. The proposed method is adopted in a series of turbulent channel flows at different Reynolds numbers. The results show that the proposed length scale with the structural function can precisely simulate turbulence at high Reynolds numbers, even with a coarse grid resolution.

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Authors and Affiliations

  1. School of Energy and Power Engineering, Beihang University, Beijing, China

    Jinglei Xu, Meng Li & Longfei Chen

  2. Northwestern Polytechnical University, Xi’an, China

    Yang Zhang

Authors
  1. Jinglei Xu
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  2. Meng Li
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  3. Yang Zhang
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  4. Longfei Chen
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Correspondence to Longfei Chen.

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Communicated by Dr. Philippe Spalart.

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Xu, J., Li, M., Zhang, Y. et al. Wall-modeled large eddy simulation of turbulent channel flow at high Reynolds number using the von Karman length scale. Theor. Comput. Fluid Dyn. 30, 565–577 (2016). https://doi.org/10.1007/s00162-016-0399-4

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  • DOI: https://doi.org/10.1007/s00162-016-0399-4

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