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Generation of turbulent inflow data for spatially-developing boundary layer simulations. (English) Zbl 0936.76026
The authors describe a method for generating three-dimensional, time-dependent turbulent inflow data for simulations of complex spatially developing boundary layers. The approach is to extract instantaneous planes of velocity data from an auxiliary simulation of a zero pressure gradient boundary layer. The auxiliary simulation is also spatially developing, but generates its own inflow conditions through a sequence of operations where the velocity field at a downstream station is rescaled and re-introduced at the inlet. This procedure is essentially a variant of the Spalart method, optimized so that an existing inflow-outflow code can be converted to an inflow-generation device through the addition of one simple subroutine. The proposed method is shown to produce a realistic turbulent boundary layer which yields statistics that are in good agreement with both experimental data and results from direct simulations.

76F65 Direct numerical and large eddy simulation of turbulence
76F40 Turbulent boundary layers
Full Text: DOI
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