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Pietro Marco Congedo, Cedric Duprat, Guillaume Balarac and Christophe Corre Numerical prediction of turbulent flows using Reynolds-averaged Navier–Stokes and large-eddy simulation with uncertain inflow conditions International Journal for Numerical Methods in Fluids 72

Article first published online: 19 OCT 2012 | DOI: 10.1002/fld.3743

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The paper performs a comparison of the Reynolds-averaged Navier–Stokes (RANS) k − ε model and the large-eddy simulation (LES) dynamic Smagorinsky model for a turbulent flow where the influence of the experimental uncertainties is analyzed using a non-intrusive polynomial chaos. Measured quantities are compared with the RANS and LES predictions to check if the differences can be explained with the inherent uncertainty. The RANS predictions are found in poor agreement with experimental results for swirling flow, whereas the LES prediction remains inside the measurement intervals.

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