EP 2171291 A1 20100407 - METHOD FOR REDUCING THE VISCOUS FRICTION BETWEEN A FLUID AND AN OBJECT
Title (en)
METHOD FOR REDUCING THE VISCOUS FRICTION BETWEEN A FLUID AND AN OBJECT
Title (de)
VERFAHREN ZUR VERRINGERUNG DER VISKOSEN REIBUNG ZWISCHEN EINEM FLUID UND EINEM OBJEKT
Title (fr)
PROCÉDÉ DESTINÉ À RÉDUIRE LE FROTTEMENT VISQUEUX ENTRE UN FLUIDE ET UN OBJET
Publication
Application
Priority
- EP 2008057622 W 20080617
- IT MI20071271 A 20070625
Abstract (en)
[origin: WO2009000703A1] It is disclosed a method for reducing the viscous friction due to the relative movement of a fluid and an object, wherein the object has an external surface in contact with a layer of the fluid and wherein the external surface has a base plane. The method comprises the following steps: forming on the external surface a plurality of projections projecting from the base plane; and imparting to the layer of fluid, by means of the plurality of projections, a profile with a periodic trajectory parallel to the base plane.
IPC 8 full level
CPC (source: EP)
B63B 1/36 (2013.01); B64C 21/10 (2013.01); F15D 1/004 (2013.01); F15D 1/065 (2013.01); F15D 1/12 (2013.01); B64C 2230/26 (2013.01); Y02T 50/10 (2013.01); Y02T 70/10 (2013.01)
Citation (search report)
See references of WO 2009000703A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
WO 2009000703 A1 20081231; EP 2171291 A1 20100407; IT MI20071271 A1 20081226
DOCDB simple family (application)
EP 2008057622 W 20080617; EP 08774109 A 20080617; IT MI20071271 A 20070625