Mechanism to reduce turning losses in angled conduits
AssigneeUnited Technologies Corporation
InventorWalter M. Presz, Jr.
Life of this patent
Estimating the term…
Abstract
Downstream extending convolutions (52) disposed on the inside corner (72) of an angled conduit (50) eliminate or reduce the two-dimensional boundary layer separation region (44) thereby eliminating or reducing the pressure losses associated with the separation region (44). The convolutions (52) may be formed into either the angled conduit wall or in an insert (200) which is positioned on the inside corner surface of the conduit.
Claims5
A conduit for carrying a fluid in a downstream direction, said conduit having an internal surface defining an internal flow passage including a bend therein which changes the direction of flow, said internal surface of the bend having an inner corner surface over which fluid within said conduit flows as it travels around the bend, said inner corner surface including means to generate large scale vortices and produce a flow variation which disrupts fluid flow in a separation region immediately downstream of said inner corner surface, said means comprising a plurality of adjoining, alternating troughs and ridges extending in the fluid flow direction around the bend and defining a convoluted surface.
Dependencies are inferred from the claim text.