Fluidic oscillator array for synchronized oscillating jet generation

Patent metadata

Field	Value
Publication number	US-9333517-B2
Application number	US-201313786713-A
Country	US
Kind code	B2
Filing date	Mar 6, 2013
Priority date	Mar 6, 2013
Publication date	May 10, 2016
Grant date	May 10, 2016

Abstract

A fluidic oscillator array includes a plurality of fluidic-oscillator main flow channels. Each main flow channel has an inlet and an outlet. Each main flow channel has first and second control ports disposed at opposing sides thereof, and has a first and a second feedback ports disposed at opposing sides thereof. The feedback ports are located downstream of the control ports with respect to a direction of a fluid flow through the main flow channel. The system also includes a first fluid accumulator in fluid communication with each first control port and each first feedback port, and a second fluid accumulator in fluid communication with each second control port and each second feedback port.

First claim

What is claimed as new and desired to be secured by Letters Patent of the United States is:

1. A fluidic oscillator array, comprising:
a plurality of fluidic-oscillator main flow channels, each of said main flow channels having an inlet and a single outlet wherein a fluid flow is adapted to enter at said inlet and exit at said outlet, each of said main flow channels having a first control port and a second control port disposed at opposing sides thereof, and each of said main flow channels having a first feedback port and a second feedback port disposed at opposing sides thereof wherein all feedback and control ports on the first side of the main flow channels fluidically communicate with a first feedback accumulator, and all feedback and control ports on a second side of the main flow channels fluidically communicate with a second feedback accumulator;
and wherein said first feedback port and said second feedback port are located downstream of said first control port and said second control port, respectively, with respect to a direction of said fluid flow;
and wherein the first feedback accumulator is in fluid communication with each said first control port and each said first feedback port; and
and wherein the second feedback accumulator is in fluid communication with each said second control port and each said second feedback port.

2. A fluidic oscillator array as in claim 1 , further comprising a common plenum in fluid communication with each said inlet.

3. A fluidic oscillator array as in claim 1 , further comprising a plurality of plenums in correspondence with said plurality of main flow channels wherein each of said plenums is in fluid communication with a unique one said inlet.

4. A fluidic oscillator array as in claim 1 , wherein each said outlet is one of a nonlinear array of outlets.

5. A fluidic oscillator array as in claim 1 , wherein each said outlet is one of a two-dimensional array of outlets.

6. A fluidic oscillator array as in claim 1 , wherein each said outlet is one of a three-dimensional array of outlets.

7. A fluidic oscillator array as in claim 1 , wherein said array comprises a layered construction, and wherein said main flow channels are disposed on a first layer of said layered construction, said first feedback accumulator is disposed on a second layer of said layered construction, and said second feedback accumulator is disposed on a third layer of said layered construction.

8. A fluidic oscillator array as in claim 1 , wherein each said outlet is one of a linear array of outlets.

9. A fluidic oscillator array comprising:
a plurality of fluidic-oscillator main flow channels, each of said main flow channels having an inlet and an outlet wherein a fluid flow is adapted to enter at said inlet and exit at said outlet, each of said main flow channels having a first control port and a second control port disposed at opposing sides thereof, and each of said main flow channels having a first feedback port and a second feedback port disposed at opposing sides thereof wherein said first feedback port and said second feedback port are located downstream of said first control port and said second control port, respectively, with respect to a direction of said fluid flow;
a first fluid accumulator in fluid communication with each said first control port and each said first feedback port; and
a second fluid accumulator in fluid communication with each said second control port and each said second feedback port,
wherein said array comprises a layered construction, and wherein said main flow channels are disposed on a first layer of said layered construction, said first fluid accumulator is disposed on a second layer of said layered construction, and said second fluid accumulator is disposed on a third layer of said layered construction.

10. A fluidic oscillator array as in claim 9 , wherein each said outlet is one of a linear array of outlets.

Assignees

• Nasa
• Nasa

Inventors

• Koklu Mehti

Classifications

• F15D1/009

  by means of vortex rings · CPC title

• F15D1/0055

  comprising apertures in the surface, through which fluid is withdrawn from or injected into the flow · CPC title

• F15C1/22

  Oscillators · CPC title

• B05B1/08 Primary

  of pulsating nature, e.g. delivering liquid in successive separate quantities · CPC title