US 11,865,556 B2
Out-of-plane curved fluidic oscillator
Mohammad Arif Hossain, Lake Jackson, TX (US); Jeffrey P. Bons, Dublin, OH (US); James W. Gregory, Columbus, OH (US); and Ali Ameri, Solon, OH (US)
Assigned to Ohio State Innovation Foundation, Columbus, OH (US)
Appl. No. 17/614,135
Filed by Ohio State Innovation Foundation, Columbus, OH (US)
PCT Filed May 28, 2020, PCT No. PCT/US2020/034882
§ 371(c)(1), (2) Date Nov. 24, 2021,
PCT Pub. No. WO2020/243274, PCT Pub. Date Dec. 3, 2020.
Claims priority of provisional application 62/854,067, filed on May 29, 2019.
Prior Publication US 2022/0250096 A1, Aug. 11, 2022
Int. Cl. F01D 25/06 (2006.01); B05B 1/08 (2006.01)
CPC B05B 1/08 (2013.01) [F01D 25/06 (2013.01)] 24 Claims
OG exemplary drawing
 
1. 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.