The cancellation of a sound-excited Tollmien-Schlichting wave with plate vibration
Abstract
An experiment is conducted in which plate vibration is used to successfully cancel a sound-excited Tollmien-Schlichting wave. With sound excitation, transition to turbulence in the boundary layer occurs at a streamwise Reynolds number (Rx) of 1.2×106. The addition of plate vibration delays the transition to Rx=1.8×106. In the laminar region of the boundary layer (at Rx=0.97×106) the addition of plate vibration reduces the level of streamwise velocity fluctuations from more than 100 times to only two times the particle velocity of the sound excitation.
- Publication:
-
Physics of Fluids
- Pub Date:
- May 1983
- DOI:
- 10.1063/1.864275
- Bibcode:
- 1983PhFl...26.1158G
- Keywords:
-
- Acoustic Excitation;
- Boundary Layer Transition;
- Flat Plates;
- Structural Vibration;
- Tollmien-Schlichting Waves;
- Vibration Effects;
- Cancellation;
- Laminar Boundary Layer;
- Reynolds Number;
- Sound Fields;
- Vibration Damping;
- Wave Interaction;
- Fluid Mechanics and Heat Transfer