Abstract

The invention relates to a separation channel for separating a fluid flowing through into two or more components, which separation channel comprises: - two parallel walls, each wall having a groove structure, in which the grooves extend at an angle of more than 0° and less than 90° to the direction of flow; and - a groove outlet, into which the grooves open for carrying off one of the two components separately.

IPC Classes  ?

• A61M 1/36 - Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation
• B01D 17/02 - Separation of non-miscible liquids
• B01D 21/26 - Separation of sediment aided by centrifugal force
• B01L 3/00 - Containers or dishes for laboratory use, e.g. laboratory glasswareDroppers
• G01N 33/49 - Physical analysis of biological material of liquid biological material blood

Abstract

The present invention relates to a layer for reducing the friction resistance of a fluid relative to an object and for improving the contact of a boundary layer of the fluid flowing past, and thereby increasing the lift, comprising a wave-like approach flow surface repeating in a first direction which comprises means for transporting fluid from the boundary layer of the fluid flowing past to cavities in the wave-like approach flow surface. The present invention further relates to a method for manufacturing such a layer.

IPC Classes  ?

• F15D 1/12 - Influencing the flow of fluids around bodies of solid material by influencing the boundary layer

Abstract

The invention relates to a skate comprising: - a frame; - an elongate blade mounted to the frame; and - a foot holder, like for example a shoe, arranged to the frame, wherein the elongate blade has a bottom surface, which surface is substantially semi-cylindrical and comprises a number of parallel abutting grooves extending in the longitudinal direction of the elongate blade and having a cross-section shaped as a cirkelsegment.

IPC Classes  ?

• A63C 1/32 - Special constructions of the simple blade

Abstract

The invention relates to a surface substantially cylindrical having a plurality of parallel helical grooves comprising a common longitudinal axis, substantially coinciding with the longitudinal axis of the cylindrical surface, and a circular cross-section, wherein each groove surface is provided with a plurality of parallel helical grooves having a common longitudinal axis, substantially coinciding with the longitudinal axis of the groove.

IPC Classes  ?

• F15D 1/06 - Influencing the flow of fluids in pipes or conduits by influencing the boundary layer

Abstract

The invention relates to a surface structure comprising surface elements (3) arranged in scales forming alternating rows, wherein the surface elements comprise grooves (4), which extend obliquely from the longitudinal axis (5) of a row in a featherlike arrangement, wherein preferably the surface elements (3) in a row extend over each other like tiles, and/or the surface elements (3) are leaf shaped, and/or the stalk of the leaf shaped surface elements (3) is teardrop shaped providing a pin shape to the surface elements.

IPC Classes  ?

• B64C 21/10 - Influencing air flow over aircraft surfaces by affecting boundary layer flow using other surface properties, e.g. roughness

Abstract

The invention relates to an object comprising a surface (2) provided with parallel primary grooves (3), each comprising an arcuate cross-section, wherein in the primary grooves (3) are arranged ridges (4) which are formed in accordance with the function y=xz, wherein z=0.5 to 1000 and wherein the axis of symmetry (6) of the grooves (3) lies substantially at right angles to the lengthwise (L) direction of the grooves (3).

IPC Classes  ?

• B64C 21/10 - Influencing air flow over aircraft surfaces by affecting boundary layer flow using other surface properties, e.g. roughness
• F15D 1/06 - Influencing the flow of fluids in pipes or conduits by influencing the boundary layer