Coherent structure of the turbulent boundary layer in the lateral direction
Abstract
Measurements of velocity, wall pressure, and wall shear fluctuations have been made at free stream velocities of 32, 73, and 675 ft/sec in order to investigate the turbulent burst phenomenon. The occurrence of bursts and their spread in the lateral direction are identified by applying a conditional sampling scheme to the digitized fluctuations. Analysis of the lateral spread of the bursts suggests that the flow structures at high velocities tend to be very narrow and swept back at or near the wall and much wider and flatter away from the wall.
- Publication:
-
In: Israel Annual Conference on Aviation and Astronautics
- Pub Date:
- 1981
- Bibcode:
- 1981avas.conf...41Z
- Keywords:
-
- Flow Measurement;
- Flow Velocity;
- Free Flow;
- Shear Flow;
- Turbulent Boundary Layer;
- Wall Flow;
- Flow Characteristics;
- Measuring Instruments;
- Sampling;
- Subsonic Flow;
- Transducers;
- Wall Pressure;
- Fluid Mechanics and Heat Transfer