Separated flow behind a backward-facing step. Part II. Experimental and numerical investigation of a turbulent flow

摘要

We present the results of an experimental and numerical investigation of aturbulent flow over a backward-facing step in a channel. Experimental data arevisualized using a Particle Image Velocimetry (PIV) device. As a mathematicalmodel we used quasi-hydrodynamic (QHD) equations. We have carried out numericalmodeling of the flow for three configurations that were also studiedexperimentally. The computed flow proved to be non-stationary. The averagedflow in the separation zone is in a good agreement with the experimental data.