Abstract
This article investigates the experimental results of a swept-wing model in a wind tunnel by means of the linear stability theory. It is discovered that different wavelengths of the crossflow stationary waves in the 3D boundary layer exhibite different evolutionary trends of disturbance. The largest amplificatory wavelength in this experimental situation, found through analysis and numerical calculation, is 4.0 mm, which is validated by Naphthalene visualization. This wavelength is successfully introduced to the leading edge of the swept-wing by an artificial roughness area created by the silk-screen technique, which affectes the 3D boundary layer transition just as predicted.
| Original language | English |
|---|---|
| Pages (from-to) | 2275-2279 |
| Number of pages | 5 |
| Journal | Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica |
| Volume | 30 |
| Issue number | 12 |
| State | Published - Dec 2009 |
Keywords
- Crossflow stationary wave
- Linear stability theory
- Natural laminar transition
- Roughness
- Silk-screen
- Swept wing
- Transition control