Influence of wall suction on coherent structures in a turbulent boundary layer
Abstract
The effect of wall suction on the structure of a turbulent boundary layer is examined both in a wind tunnel and in a water tunnel. The wind tunnel data show that, in the inner layer, the convection velocity of spatially coherent temperature fronts is significantly increased by suction. In the water tunnel, flow visualizations indicate that suction increases the stability and the longitudinal coherence of low-speed streaks. Both flow visualizations and wind tunnel data strongly support the stabilizing effect of suction.
- Publication:
-
9th Australasian Fluid Mechanics Conference
- Pub Date:
- 1987
- Bibcode:
- 1987aafm.conf..346A
- Keywords:
-
- Flow Visualization;
- Suction;
- Turbulent Boundary Layer;
- Wall Flow;
- Water Tunnel Tests;
- Wind Tunnels;
- Dynamic Structural Analysis;
- Reynolds Stress;
- Shear Stress;
- Skin Friction;
- Stanton Number;
- Fluid Mechanics and Heat Transfer