Secondary instabilities in swept-wing boundary layers: Direct Numerical Simulations and BiGlobal stability analysis

The evolution of secondary instabilities in a three-dimensional stationary-crossflow-domina- ted boundary layer is investigated by means of Direct Numerical Simulations (DNS) and linear spanwise BiGlobal stability analysis. Single-frequency unsteady disturbances and a critical stationary crossflow mode are considered. Unsteady perturbation...

Secondary Stability Analysis of Crossflow Vortices using BiGlobal Theory on PIV Base Flows