Abstract
Measurements on velocity distributions in boundaries at the same point over smooth and riblet surface were carried out by means of hot-wire anemometer in low-speed wind tunnel. It was found that the riblet surface, having drag reducing effect, can increase near-wall flow velocity and decrease turbulent intensity, but have little influence on high-order moment by contrasting and analyzing the turbulence statistical average values, and have more than 10 percent drag-reduction by calculating momentum loss thickness.
| Original language | English |
|---|---|
| Pages (from-to) | 769-772 |
| Number of pages | 4 |
| Journal | Binggong Xuebao/Acta Armamentarii |
| Volume | 30 |
| Issue number | 6 |
| State | Published - Jun 2009 |
Keywords
- Drag-reduction
- Hot-wire anemometry
- Hydromechanics
- Riblet surface
- Turbulent intensity
- Wind tunnel