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Zonal embedded grids for numerical simulations of wall-bounded turbulent flows. (English) Zbl 0862.76062

A B-spline based numerical method on a zonal embedded grid has been developed. The method is aimed at reducing the computational requirements for large eddy simulations (LES) and direct numerical simulations (DNS) of wall-bounded turbulent flows. The objective is to reduce the number of grid points required to resolve the near-wall eddies without placing a large number of grid points in the outer layers. DNS and LES calculations of a turbulent channel flow were performed on a grid with a zone near the wall that was refined in all three directions. The results from the zonal grid calculations show good agreement with previously published numerical and experimental results.

MSC:

76M25 Other numerical methods (fluid mechanics) (MSC2010)
76F10 Shear flows and turbulence
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