The interaction of streamwise vortices and streaks in turbulent boundary layers leads to an asymmetry of cross correlations. This effect is proved for a lowdimensional model and direct numerical simulations. The results are compared to windtunnel measurements of turbulent boundary layers.
Further on the influence of viscoelastic fluids to the cross correlations is studied.
Nonlinear dynamics and nonlinear dynamical systems (see also section 45 Classical mechanics of discrete systems)Nichtnormale VerstärkungNonnormal amplification
DFG-subjects
Direkte numerische SimulationTurbulente GrenzschichtKorrelationsfunktionUmschlag StrukturbildungComputersimulation
