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Test Of Turbulence Models For Wind Flow Over Terrain With Separation And Recirculation

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Abstract

Several two-equation turbulence models using isotropic eddy viscosity and wall functions are assessed by solution of the neutral atmospheric boundary layer over a flat surface and wind flow over two- and three-dimensional models and real terrain. Calculations are presented for wind flow over the Sirhowy Valley in Wales, an embankment along the Rhine in Germany and the Askervein Hill in Scotland. Comparisons of predictions with previous work, and laboratory and field data, show that the RNG-based k–∈ model gives the best agreement with respect to the flow profiles and length of the separated flow region. The results of this model are analyzed with a non-linear stress-strain relation to gauge the potential effect of turbulence anisotropy.

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Authors and Affiliations

  1. Iowa Institute of Hydraulic Research, The University of Iowa, 300 South Riverside Drive, Iowa City, IA, 52242-1585, U.S.A.

    H. G. Kim

  2. Iowa Institute of Hydraulic Research, The University of Iowa, 300 South Riverside Drive, Iowa City, IA, 52242-1585, U.S.A.

    V. C. Patel

Authors
  1. H. G. Kim
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  2. V. C. Patel
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Kim, H.G., Patel, V.C. Test Of Turbulence Models For Wind Flow Over Terrain With Separation And Recirculation. Boundary-Layer Meteorology 94, 5–21 (2000). https://doi.org/10.1023/A:1002450414410

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