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Published January 2016 | Accepted Version
Journal Article Open

Turbulent channel with slip boundaries as a benchmark for subgrid-scale models in LES


Most turbulent flows cannot be calculated by direct numerical simulation (DNS) of the Navier-Stokes equations because the range of scales of motion is so large that the computational cost becomes prohibitive. In large-eddy simulations (LES), only the large eddies are resolved and the effect of the small scales on the larger ones is supplied through a subgrid-scale (SGS) model in order to overcome most of the computational cost. In this sense, the role of SGS models is to provide the missing large-scale Reynolds stresses that can not be resolved in coarser LES computational grids.

Additional Information

© 2016 Stanford University. This work was supported by NASA under the Transformative Aeronautics Concepts Program, Grant #NNX15AU93A. The authors would like to thank Prof. Roel Verstappen for his discussions about the necessity of new benchmarks for SGS models that initiated the present work.

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Accepted Version - nihms-1050991.pdf


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