B - Operations – Transporting – 64 – D
Patent
B - Operations, Transporting
64
D
137/137
B64D 33/04 (2006.01) B64C 21/10 (2006.01)
Patent
CA 1302841
Abstract A diffuser has a plurality of adjacent, adjoining, alternating U-shaped troughs and ridges which extend downstream over a portion of the diffuser surface defining an undulating surface portion of the diffuser wall. The undulating surface delays or prevents streamwise two-dimensional boundary layer separation by providing three-dimensional relief for the low momentum boundary layer flow, thereby permitting diffusers to be designed with either greater area ratios for the same diffusing length, or shorter diffusing lengths for the same area ratio.
535920
Paterson Robert W.
Presz Walter M. Jr.
Werle Michael J.
Swabey Ogilvy Renault
United Technologies Corporation
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