The stabilization of Tollmien-Schlichting (TS) waves in a spanwise modulated Blasius boundary layer has been experimentally verified in the MTL wind tunnel at KTH. The alternating high and low speed streaks were created by regularly spaced cylindrical roughness elements mounted near the leading edge of the flat plate. It is shown that the larger the streak amplitude is the larger is the damping effect of the TS-waves, which is in agreement with recent theoretical works.
Talamelli A., Fransson J.H.M., Brandt L., Cossu C. (2005). STABILIZATION OF TOLLMIEN-SCHLICHTING WAVES BY MEANS OF ROUGHNESS GENERATED STREAKS. VOLTERRA (PI) : DGMP srl.
STABILIZATION OF TOLLMIEN-SCHLICHTING WAVES BY MEANS OF ROUGHNESS GENERATED STREAKS
TALAMELLI, ALESSANDRO;
2005
Abstract
The stabilization of Tollmien-Schlichting (TS) waves in a spanwise modulated Blasius boundary layer has been experimentally verified in the MTL wind tunnel at KTH. The alternating high and low speed streaks were created by regularly spaced cylindrical roughness elements mounted near the leading edge of the flat plate. It is shown that the larger the streak amplitude is the larger is the damping effect of the TS-waves, which is in agreement with recent theoretical works.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
