Generalized flow profile production

Patent metadata

Field	Value
Publication number	US-10865818-B2
Application number	US-201716099389-A
Country	US
Kind code	B2
Filing date	May 5, 2017
Priority date	May 6, 2016
Publication date	Dec 15, 2020
Grant date	Dec 15, 2020

Abstract

Various examples are provided related to improvements in generalized flow profile production. In one example, a method includes determining a downstream flow profile including a pressure profile and a velocity profile; fabricating a pressure profile generator including distortion screen(s) disposed on a backing structure; fabricating a velocity profile generator including turning vanes in a flow path through the velocity profile generator that are configured to generate the velocity profile; attaching the pressure profile generator to an input side of the velocity profile generator; and installing the flow conditioning device in the flow field of interest. Flow through the flow conditioning device produces the downstream flow profile in the flow field of interest. In another example, a flow conditioning device includes a pressure profile generator with distortion screen(s) disposed on a backing structure; and a velocity profile generator with turning vanes attached to an input side of the velocity profile generator.

First claim

Therefore, at least the following is claimed:

1. A method, comprising:
determining a downstream flow profile comprising a pressure profile and a velocity profile;
fabricating a pressure profile generator comprising one or more distortion screens disposed on a backing structure to generate the pressure profile in a flow field of interest;
fabricating a velocity profile generator comprising turning vanes in a flow path through the velocity profile generator, the turning vanes configured to generate the velocity profile in the flow field of interest;
attaching the pressure profile generator to an input side of the velocity profile generator to form a flow conditioning device; and
installing the flow conditioning device in the flow field of interest, where flow through the flow conditioning device produces the downstream flow profile in the flow field of interest.

2. The method of claim 1 , wherein fabricating the pressure profile generator comprises:
disposing the one or more distortion screens on the backing structure; and
positioning the backing structure and one or more distortion screens between mounting plates, each mounting plate comprising an opening configured to align with the flow path through the velocity profile generator.

3. The method of claim 2 , wherein the one or more distortion screens comprise a plurality of layered distortion screens disposed on the backing structure, the plurality of layered distortion screens having different contour patterns that provide a variation in local porosity across an area of the backing structure.

4. The method of claim 2 , wherein the one or more distortion screens comprise a plurality of non-overlapping distortion screens.

5. The method of claim 4 , wherein the plurality of non-overlapping distortion screens comprise distortion screens having different porosities.

6. The method of claim 1 , further comprising determining a distribution of the one or more distortion screens on the backing structure using computational fluid dynamics (CFD) analysis based upon the pressure profile, the one or more distortion screens having contour patterns that provide a variation in local porosity across an area of the backing structure.

7. The method of claim 6 , further comprising fabricating the one or more distortion screens using a printed contour pattern.

8. The method of claim 1 , wherein the backing structure comprises a wire mesh screen, where the one or more distortion screens are disposed on an inlet side of the wire mesh screen.

9. The method of claim 8 , wherein the backing structure further comprises a support frame located on an outlet side of the wire mesh screen.

10. The method of claim 1 , wherein fabricating the velocity profile generator comprises:
determining local turning angles of the turning vanes based upon the velocity profile; and
producing the turning vanes based upon a computer aided design model generated from the local turning angles of the turning vanes.

11. The method of claim 10 , wherein the turning vanes are fabricated using advanced manufacturing techniques.

12. The method of claim 1 , wherein the downstream flow profile is produced in flow exiting the flow conditioning device.

13. The method of claim 1 , further comprising measuring characteristics of the flow field of interest downstream of the flow conditioning device.

14. A flow conditioning device, comprising:
a pressure profile generator comprising one or more distortion screens disposed on a backing structure, the one or more distortion screens configured to generate a pressure profile in a flow field of interest; and
a velocity profile generator comprising turning vanes in a flow path through the velocity profile generator, the pressure profile generator attached to an input side of the velocity profile generator, the turning vanes configured to generate a velocity profile in the flow field of interest.

15. The flow conditioning device of claim 14 , wherein the backing structure and one or more distortion screens are positioned between mounting plates, each mounting plate comprising an opening aligned with the flow path through the velocity profile generator.

16. The flow conditioning device of claim 14 , wherein the one or more distortion screens comprise a plurality of layered distortion screens disposed on the backing structure, the plurality of layered distortion screens having different contour patterns that provide a variation in local porosity across an area of the backing structure.

17. The flow conditioning device of claim 14 , wherein the one or more distortion screens comprise a plurality of non-overlapping distortion screens.

18. The flow conditioning device of claim 17 , wherein the plurality of non-overlapping distortion screens comprise distortion screens having different porosities.

19. The flow conditioning device of claim 14 , further comprising an inlet adapter positioned on an inlet side of the pressure profile generator, the inlet adapter extending around an inlet to the flow path.

20. The flow conditioning device of claim 14 , further comprising a mounting adapter affixed to the velocity profile generator, the mounting adapter configured to secure the flow conditioning device in the flow field of interest.

Assignees

• Frohnapfel Dustin J
• Obrien Jr Walter F
• Lowe K Todd
• Virginia Tech Intellectual Properties Inc

Inventors

• Frohnapfel Dustin J
• O'Brien Jr Walter F
• Lowe K Todd

Classifications

• F15D1/025

  by means of orifice or throttle elements · CPC title

• F15D1/001 Primary

  Flow of fluid from conduits such as pipes, sleeves, tubes, with equal distribution of fluid flow over the evacuation surface · CPC title

• G01M9/065

  dealing with flow · CPC title

• F15D1/02

  in pipes or conduits · CPC title