Seventh International Symposium on Turbulence and Shear Flow Phenomena
DOI: 10.1615/TSFP7
A STOCHASTIC LOW-ORDER MODELLING APPROACH FOR TURBULENT SHEAR FLOWS
pages 1-6
DOI: 10.1615/TSFP7.1710
ABSTRACT
A reduced-order modelling, based on the POD-Galerkin approach, is developped in a probabilistic framework in order to build robust low-dimensional dynamical systems able to reproduce the dominant long-term dynamics of turbulent flows. It combines a statistical inference procedure to determine joined probability distribution functions of the dynamical system coefficients and a Monte-Carlo approach to foresee its most probable time evolution. The method is shown to reproduce correctly the main dynamical features of a turbulent mixing layer.