Fourth International Symposium on Turbulence and Shear Flow Phenomena
DOI: 10.1615/TSFP4
ALGEBRAIC AND OPERATOR METHODS FOR GENERATION OF INFLOW DATA FOR LES AND DNS
pages 687-692
DOI: 10.1615/TSFP4.1150
RÉSUMÉ
The paper describes a statistical method for the generation of inflow data for DNS and LES based on the analysis of second order two-point, two-time correlations. The method is based on the weighting of uncorrelated random numbers with appropriate coefficients, representing orthogonal decompositions of the covariance tensor itself. The novelty of the method consists in the possibility it offers of reproducing any prescribed realisable two-point, two-time correlation. To illustrate its efficacy the method is applied to the generation of inflow data starting from the two-point, two-time covariance tensor extracted from the LES of a fully developed periodic channel flow.