Fluidic actuation for improved diffuser performance

Details Fluidic actuation for improved diffuser performance Fluidic actuation for improved diffuser performance

2005-05-24

2005-05-24

Nguyen, Ninh H. (Department: 3745)

Rotary kinetic fluid motors or pumps

Method of operation

C416S116000, C416S211000, C416S235000, C416S144000

Reexamination Certificate

active

06896475

ABSTRACT:
A diffuser includes an opening along the diffuser wall for preventing or delaying boundary layer separation of the main flow. The opening may include a curved passageway having a curvature convex relative to the main flow for utilizing the Coanda effect. A gas turbine may include the diffuser with an opening and a centerbody with an opening, each for providing a secondary flow of fluid into the diffuser. The gas turbine may direct fluid from an upstream turbine stage to the opening. A steam turbine may include the diffuser and may situate the opening downstream the diffuser inlet but upstream the location of boundary separation.

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