Adaptive slots : An alternative concept to reduce wall interference

An alternative concept to reduce wall interference in wind-tunnel testing by means of adaptive slots is presented and its benefits are highlighted by means of experimental as well as numerical investigations. The qualification of the 3d-NAVIER-STOKES code employed for the parametric numerical investigations is demonstrated by comparison with Laser 2-focus and surface pressure measurements. The effectiveness of a single central adaptive slot is proved for a convex profile as well as for a body of revolution by referencing the results to 2d wall adaptations.