Events
Control of Large-Scale Structures in Turbulent Boundary Layers
| Date: | Wednesday 28 November 2007 15:00 - 16:00 |
| Location: | Eng. 216 |
Kwing-So Choi
School of Mechanical, Materials and Manufacturing Engineering,
University of Nottingham
Abstract
A concept of autonomous cycle in the near-wall region of turbulent boundary layer may suggest that the outer-layer structures do not actively involve in the maintenance of turbulence. However, existing numerical, experimental and field test results seem to indicate that there is a growing importance of large-scale, outer-layer structures with an increase in the Reynolds number. An experimental work is being conduced at the University of Nottingham to directly intervene the large-scale structures of turbulent boundary layers with a view to reduce the skin-friction drag. Some of recent results will be presented in this seminar to demonstrate that this technique could be a practical
alternative to MEMS-based control of near-wall turbulence.
