F - Mech Eng,Light,Heat,Weapons – 02 – C
Patent
F - Mech Eng,Light,Heat,Weapons
02
C
60/185
F02C 7/06 (2006.01) F01D 5/18 (2006.01) F02K 1/82 (2006.01) F23R 3/06 (2006.01)
Patent
CA 1225530
Vortex Generating Flow Passage Design for Increased Film Cooling Effectiveness Abstract It is an object of the invention to provide a film cooling apparatus of increased effectiveness and efficiency. In accordance with the invention, a cooling fluid is injected into a hot flowing gas through a passageway in a wall which contains and is subject to the hot gas. The passageway is slanted in a downstream direction at an acute angle to the wall. A cusp shape is provided in the passageway to generate vortices in the injected cooling fluid thereby reducing the energy extracted from the hot gas for that purpose. The cusp shape increases both film cooling effectiveness and wall area coverage. The cusp may be at either the downstream or upstream side of the passageway, the former substantially eliminating flow separation of the cooling fluid from the wall immediately down- stream of the passageway.
470725
Mccarthy Tetrault Llp
United States (government Of The) Represented By The Administrat
LandOfFree
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