Abstract
We study the flow characteristics of supercritical airfoil; we have tested some classic examples to explore the flow mechanism of multi-bump technology and to study the characteristics of drag reduction by taking advantage of Computational Fluid Dynamics (CFD) method. We analyze the flow mechanism of multi-bump and then adjust the location and the geometry of multi-block. We find that not only the bump near the shock can reduce the wave drag but also the bump located near the leading-edge can improve the flow properties of airfoil. We applied multi-bump technology to RAE2822, and we find that the multi-bump technology can get more drag reduction, and that the total drag reduction can reach 11.5%.
| Original language | English |
|---|---|
| Pages (from-to) | 517-521 |
| Number of pages | 5 |
| Journal | Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University |
| Volume | 31 |
| Issue number | 4 |
| State | Published - 2013 |
Keywords
- Aircraft
- Airfoils
- Computational fluid dynamics
- Drag reduction
- Flow mechanism
- Lift darg ratio
- Multi-bump
- Pressure distribution
- Schematic diagrams