METHOD FOR PRODUCING AN OBJECT PROVIDED WITH RIBLETS ON AND/OR IN THE SURFACE, AND OBJECT PRODUCED THEREBY
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United States of America Patent
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Issued Date -
Feb 23, 2023
app pub date -
Dec 14, 2020
filing date -
Dec 14, 2020
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Abstract
A method for producing an object with riblets on and/or in the surface, around which object a fluid flows during use. A frictional resistance acting on a surface region along a flow direction during a flow around the object in the fluid is calculated and added up to a cumulative frictional resistance over a length of the surface region in the flow direction, after which the riblets are provided on and/or in a partial region of the surface in which an increase in the cumulative frictional resistance is at least 0.9, in particular greater than 1.0 to 0.9. Moreover, a method is provided for modifying a surface of an object around which a fluid flows during use, such as a foil. A structure having riblets is created on and/or in the surface, which structure reduces flow resistance of the object. Furthermore, a fluid flows around an object during use.
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