Downstream plasma shielded film cooling

Details Downstream plasma shielded film cooling Downstream plasma shielded film cooling

F - Mech Eng,Light,Heat,Weapons

15

D

F15D 1/06 (2006.01) F01D 25/12 (2006.01) F15D 1/12 (2006.01) F23R 3/16 (2006.01) H05H 1/24 (2006.01)

Patent

CA 2612042

An downstream plasma boundary layer shielding system includes film cooling apertures disposed through a wall having cold and hot surfaces and angled in a downstream direction from a cold surface of the wall to an outer hot surface of the wall. A plasma generator located downstream of the film cooling apertures is used for producing a plasma extending downstream over the film cooling apertures. Each plasma generator includes inner and outer electrodes separated by a dielectric material disposed within a groove in the outer hot surface. The wall may be part of a hollow airfoil or an annular combustor or exhaust liner. A method for operating the downstream plasma boundary layer shielding system includes forming a plasma extending in the downstream direction over the film cooling apertures along the outer hot surface of the wall. The method may further include operating the plasma generator in steady state or unsteady modes.

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