Passive micro-roughness array for drag modification
US8113469B2 · kind B2 · utility
15Cited by
30References
40Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 21, 2007 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Feb 24, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/10
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to a micro-array surface that provides for either drag reduction or enhancement. In one aspect, an aerodynamic or hydrodynamic wall surface that is configured to modify a fluid boundary layer on the surface comprises at least one array of roughness elements disposed on and extending therefrom the surface. In one example, the interaction of the roughness elements with a turbulent boundary layer of the fluid reduces the skin friction drag coefficient of the surface over an identical smooth surface without the roughness elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.