Abstract
In this paper two important factors – the subgrid model length scale and lateral resolution – are investigated for the large‐eddy simulation (LES) of high Reynolds number turbulent channel flow using resolutions that are insufficient to fully resolve the buffer layer. It is found that the use of standard damping functions will not reproduce correct mean velocity profiles and that good LES results will only be obtained by adjustment of the subgrid model length scales. To also obtain accurate turbulence statistics then special attention has to be given to the lateral resolution.
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