# US 10,865,818 B2 · Generalized flow profile production > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,865,818 B2 - Document ID: US10865818B2 - Status: Granted - Kind: B2 - Application number: 16/099,389 - Filed: 2017-05-05 - Published: 2019-03-21 - Granted: 2020-12-15 - Earliest claimed: 2016-05-06 - Assignees: Virginia Tech Intellectual Properties, Inc. - Applicants: Dustin J. Frohnapfel; Walter F. O'Brien, Jr.; K. Todd Lowe - Inventors: Dustin J. Frohnapfel; Walter F. O'Brien, Jr.; K. Todd Lowe - Web page: https://patentgrep.com/patent/US10865818B2 ## CPC - F15D 1/001: {Flow of fluid from conduits such as pipes, sleeves, tubes, with equal distribution of fluid flow over the evacuation surface} - F15D 1/02: in pipes or conduits - F15D 1/025: {by means of orifice or throttle elements} - G01M 9/065: {dealing with flow} - F15D: FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS - G01M: TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR ## 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. ## Claims ### Claim 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. ### Claim 2 (depends on 1) 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. ### Claim 3 (depends on 2) 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. ### Claim 4 (depends on 2) The method of claim 2, wherein the one or more distortion screens comprise a plurality of non-overlapping distortion screens. ### Claim 5 (depends on 4) The method of claim 4, wherein the plurality of non-overlapping distortion screens comprise distortion screens having different porosities. ### Claim 6 (depends on 1) 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. ### Claim 7 (depends on 6) The method of claim 6, further comprising fabricating the one or more distortion screens using a printed contour pattern. ### Claim 8 (depends on 1) 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. ### Claim 9 (depends on 8) The method of claim 8, wherein the backing structure further comprises a support frame located on an outlet side of the wire mesh screen. ### Claim 10 (depends on 1) 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. ### Claim 11 (depends on 10) The method of claim 10, wherein the turning vanes are fabricated using advanced manufacturing techniques. ### Claim 12 (depends on 1) The method of claim 1, wherein the downstream flow profile is produced in flow exiting the flow conditioning device. ### Claim 13 (depends on 1) The method of claim 1, further comprising measuring characteristics of the flow field of interest downstream of the flow conditioning device. ### Claim 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. ### Claim 15 (depends on 14) 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. ### Claim 16 (depends on 14) 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. ### Claim 17 (depends on 14) The flow conditioning device of claim 14, wherein the one or more distortion screens comprise a plurality of non-overlapping distortion screens. ### Claim 18 (depends on 17) The flow conditioning device of claim 17, wherein the plurality of non-overlapping distortion screens comprise distortion screens having different porosities. ### Claim 19 (depends on 14) 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. ### Claim 20 (depends on 14) 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.