ES2185481A1 - Velocimetry equipment by correlating images with reduction of errors associated with speed gradients and query window edges - Google Patents

Velocimetry equipment by correlating images with reduction of errors associated with speed gradients and query window edges

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Publication number
ES2185481A1
ES2185481A1 ES200100630A ES200100630A ES2185481A1 ES 2185481 A1 ES2185481 A1 ES 2185481A1 ES 200100630 A ES200100630 A ES 200100630A ES 200100630 A ES200100630 A ES 200100630A ES 2185481 A1 ES2185481 A1 ES 2185481A1
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ES
Spain
Prior art keywords
reduction
errors associated
query window
piv
equipment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
ES200100630A
Other languages
Spanish (es)
Other versions
ES2185481B1 (en
Inventor
Goriba Jose Ignacio Nogueira
Newmann Antonio Lecuona
Aumente Pedro Acislo Rodriguez
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Universidad Carlos III de Madrid
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Universidad Carlos III de Madrid
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Universidad Carlos III de Madrid filed Critical Universidad Carlos III de Madrid
Priority to ES200100630A priority Critical patent/ES2185481B1/en
Publication of ES2185481A1 publication Critical patent/ES2185481A1/en
Application granted granted Critical
Publication of ES2185481B1 publication Critical patent/ES2185481B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Image Analysis (AREA)

Abstract

Velocimetry equipment by correlating images with reduction of errors associated with speed gradients and query window edges.The present invention is a modification of the usual particle image velocimetry equipment (PIV). This modification consists in the combined use of symmetrical direct correlation and compensation of the pattern deformation of particles, avoiding the instability that can develop in said association. The attached chart presents an example of said instability. The advantages of this PIV velocimeter are the reduction of errors associated with the edges of the query window and the presence of gradients in the movement field. The possibilities of application of this velocimeter include the totality of fields in which PIV is employed (such as aeronautics, naval, environment, civil and mechanical engineering, chemical industry, etc.).
ES200100630A 2001-03-19 2001-03-19 SPEED EQUIPMENT FOR CORRELATION OF IMAGES WITH REDUCTION OF ERRORS ASSOCIATED WITH SPEED GRADIENTS AND ON THE EDGE OF THE INTERROGATION WINDOW. Expired - Fee Related ES2185481B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES200100630A ES2185481B1 (en) 2001-03-19 2001-03-19 SPEED EQUIPMENT FOR CORRELATION OF IMAGES WITH REDUCTION OF ERRORS ASSOCIATED WITH SPEED GRADIENTS AND ON THE EDGE OF THE INTERROGATION WINDOW.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200100630A ES2185481B1 (en) 2001-03-19 2001-03-19 SPEED EQUIPMENT FOR CORRELATION OF IMAGES WITH REDUCTION OF ERRORS ASSOCIATED WITH SPEED GRADIENTS AND ON THE EDGE OF THE INTERROGATION WINDOW.

Publications (2)

Publication Number Publication Date
ES2185481A1 true ES2185481A1 (en) 2003-04-16
ES2185481B1 ES2185481B1 (en) 2004-09-16

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ID=8497128

Family Applications (1)

Application Number Title Priority Date Filing Date
ES200100630A Expired - Fee Related ES2185481B1 (en) 2001-03-19 2001-03-19 SPEED EQUIPMENT FOR CORRELATION OF IMAGES WITH REDUCTION OF ERRORS ASSOCIATED WITH SPEED GRADIENTS AND ON THE EDGE OF THE INTERROGATION WINDOW.

Country Status (1)

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ES (1) ES2185481B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08129025A (en) * 1994-10-28 1996-05-21 Mitsubishi Space Software Kk Three-dimensional image processing flow velocity measuring method
US5610703A (en) * 1994-02-01 1997-03-11 Deutsche Forschungsanstalt Fur Luft-Und Raumfahrt E.V. Method for contactless measurement of three dimensional flow velocities
WO2000003308A2 (en) * 1998-07-10 2000-01-20 Kansas State University Research Foundation Particle image velocimetry apparatus and methods
JP2001074415A (en) * 1999-09-06 2001-03-23 Japan Nuclear Cycle Development Inst States Of Projects Method for measuring mobile body using image correlation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5610703A (en) * 1994-02-01 1997-03-11 Deutsche Forschungsanstalt Fur Luft-Und Raumfahrt E.V. Method for contactless measurement of three dimensional flow velocities
JPH08129025A (en) * 1994-10-28 1996-05-21 Mitsubishi Space Software Kk Three-dimensional image processing flow velocity measuring method
WO2000003308A2 (en) * 1998-07-10 2000-01-20 Kansas State University Research Foundation Particle image velocimetry apparatus and methods
JP2001074415A (en) * 1999-09-06 2001-03-23 Japan Nuclear Cycle Development Inst States Of Projects Method for measuring mobile body using image correlation

Also Published As

Publication number Publication date
ES2185481B1 (en) 2004-09-16

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