Title:
FRICTION DRAG-REDUCING SURFACE
Document Type and Number:
WIPO Patent Application WO/2006/121909
Kind Code:
A3
Abstract:
An article includes a body (10) having at least one viscous drag-reducing surface. The surface includes at least one of a hydrophobic feature topography including a plurality of spaced apart microscale features and a hydrophobic coating to render the surface at least hydrophobic. A multiplicity of indentations are in the surface, the indentations being macro-scale depressions (12) separated and enframed by a plurality of ridges (14). The macro-scale depressions (12) trap gas bubbles therein, wherein viscous drag between the article and water is reduced by the surface.
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Inventors:
D URSO BRIAN (US)
Application Number:
PCT/US2006/017502
Publication Date:
September 10, 2010
Filing Date:
May 05, 2006
Export Citation:
Assignee:
UT BATTELLE LLC (US)
D URSO BRIAN (US)
D URSO BRIAN (US)
International Classes:
B63B1/38; C09K3/18; F15D1/06; F15D1/12
Foreign References:
| EP0616940A1 | 1994-09-28 | |||
| JP2005048904A | 2005-02-24 | |||
| US20050061221A1 | 2005-03-24 | |||
| US20060024508A1 | 2006-02-02 | |||
| US20060024478A1 | 2006-02-02 | |||
| JPH09262563A | 1997-10-07 |
Other References:
WATANABE K. ET AL: "Drag reduction of Newtonian fluid in a circular pipe with a highly water-repellent wall", JOURNAL OF FLUID MECHANICS, vol. 381, 1999, pages 225 - 238, XP008068985
MIN T., KIM J.: "Effects of hydrophobic surface on skin-friction drag", PHYSICS OF FLUID, vol. 16, no. 7, July 2004 (2004-07-01), pages 55 - 58, XP008068986
MIN T., KIM J.: "Effects of hydrophobic surface on skin-friction drag", PHYSICS OF FLUID, vol. 16, no. 7, July 2004 (2004-07-01), pages 55 - 58, XP008068986
Attorney, Agent or Firm:
JETTER, Neil, R. (CUSTOMER NO. 30448P.o. Box 318, West Palm Beach Florida, US)
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