Cancellation of crossflow instabilities through multiple discrete roughness elements forcing

The presented work introduces a novel cancelation technique, based on the linear superposition of stationary crossflow instabilities (CFI) through application streamwise series optimally positioned discrete roughness elements (DRE) arrays swept wing surface. DRE are designed and arranged with suitable amplitude phase shift to induce velocity disturbance systems that destructively interact, ultimately damping developing CFI. This results in suppression monochromatic CFI, reducing their growth delaying boundary layer transition turbulence.