Third Symposium on Turbulence and Shear Flow Phenomena
DOI: 10.1615/TSFP3
GENERATION OF TURBULENT INLET-BOUNDARY CONDITIONS USING POD-MODES
pages 829-834
DOI: 10.1615/TSFP3.1400
RÉSUMÉ
A very large-eddy simulation based on a small set, S, of POD-modes of turbulent channel flow is performed in order to generate turbulent inlet-boundary conditions for a DNS of the same flow. On to the large-scale motion small-scale random POD-modes, not included in the set S, are added in order to impose some energy in the high wave-number part of the spectrum. It is found that the normal Reynolds stresses and the energy spectra attain the same level as in fully developed channel flow approximately 5 channel heights downstream the inlet.