Patent ID: 11865556
Assignee: OHIO STATE INNOVATION FOUNDATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC B  F  Y | IPC B  F

Claim 15:
16. A turbine comprising:
at least one turbine blade having an upper surface, a lower surface spaced apart from the upper surface, and a leading edge; and
an out-of-plane feedback-type fluidic oscillator, the fluidic oscillator comprising:
a first portion, a second portion, a middle portion coupled between the first portion and the second portion, and an axis of curvature, the middle portion comprising:
a first side, a second side opposite and spaced apart from the first side, and a middle plane, the first side being coupled to the first portion and the second side being coupled to the second portion, wherein the first side, the second side, and the middle plane extend circumferentially around the axis of curvature such that the middle plane is positioned radially outward from the second side and the first side is positioned radially outward from the middle plane, the middle plane being disposed equally distanced from the first side and the second side;
an interaction chamber having a first attachment wall and a second attachment wall opposite and spaced apart from the first attachment wall,
a fluid supply inlet for introducing a fluid stream into the interaction chamber,
an outlet nozzle downstream of the fluid supply inlet, wherein the fluid stream exits the interaction chamber through the outlet nozzle,
wherein the first side, the second side, and the middle plane are continuously curved around the axis of curvature from the fluid supply inlet to the outlet nozzle; and
a first feedback channel coupled to the first attachment wall and a second feedback channel coupled to the second attachment wall, the first feedback channel and second feedback channel being in fluid communication with the interaction chamber, each of the first feedback channel and second feedback channel having a first end, a second end opposite and spaced apart from the first end, and an intermediate portion disposed between the first end and second end, wherein the first end is adjacent the outlet nozzle and the second end is adjacent the fluid supply inlet, wherein the first attachment wall and second attachment wall of the interaction chamber are shaped to allow fluid from the fluid stream to flow into the first ends of the first feedback channel and second feedback channel, respectively, causing the fluid stream to oscillate between the first attachment wall and second attachment wall of the interaction chamber such that the fluid stream oscillates as the fluid stream exits the outlet nozzle;

wherein the outlet nozzle is defined by the upper surface and the fluidic oscillator is positioned such that the fluid stream exiting the outlet nozzle flows over a portion of the upper surface of the at least one turbine blade.