Methods for reducing the viscous drag on a surface and drag reducing device
US7044073B2 · kind B2 · utility
15Cited by
8References
40Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 28, 2003 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | Jun 10, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T70/10
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A submerged surface is created, either as an add-on application or as an integral part of the submerged structure, having an array of closely spaced small bubble-filled holes which cover a large fraction of the wetted surface area. The viscous drag on the bubbles is much smaller than that on the surrounding solid surface and the net drag on the entire submerged surface is less than that on an equivalent solid surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.