ES2155331B1 - SPEED PROCEDURE FOR CORRELATION OF PARTICLE IMAGES WITH SPACE RESOLUTION LESS THAN THE SIZE OF THE INTERROGATION WINDOW. - Google Patents

SPEED PROCEDURE FOR CORRELATION OF PARTICLE IMAGES WITH SPACE RESOLUTION LESS THAN THE SIZE OF THE INTERROGATION WINDOW.

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Publication number
ES2155331B1
ES2155331B1 ES9800999A ES9800999A ES2155331B1 ES 2155331 B1 ES2155331 B1 ES 2155331B1 ES 9800999 A ES9800999 A ES 9800999A ES 9800999 A ES9800999 A ES 9800999A ES 2155331 B1 ES2155331 B1 ES 2155331B1
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Spain
Prior art keywords
correlation
particle images
procedure
size
piv
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Expired - Fee Related
Application number
ES9800999A
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Spanish (es)
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ES2155331A1 (en
Inventor
Goriba Jose Ignacio Nogueira
Newman Antonio Lecuona
Aumente Pedro Aciscl Rodriguez
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Universidad Carlos III de Madrid
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Universidad Carlos III de Madrid
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Priority to ES9800999A priority Critical patent/ES2155331B1/en
Publication of ES2155331A1 publication Critical patent/ES2155331A1/en
Application granted granted Critical
Publication of ES2155331B1 publication Critical patent/ES2155331B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

Procedimiento de velocimetría por correlación de imágenes de partículas con resolución espacial menor que el tamaño de la ventana de interrogación. La presente invención consiste en una modificación de los equipos usuales de velocimetría por imágenes de partículas (Particle Image Velocimetry ó PIV). Esta modificación es un procedimiento novel de extracción de la información del campo de desplazamientos a partir de las imágenes de partículas. El problema que resuelve este nuevo procedimiento es la obtención de resoluciones espaciales menores que la ventana de interrogación en PIV por correlación (efecto observable en la figura 3, serie 4, -ventanas de interrogación de 64 pixels-). El nuevo procedimiento se puede aplicar a cualquier equipo de PIV por correlación numérica. Consecuentemente, su posibilidad de aplicación abarca la totalidad de campos en los que se emplea el PIV usual (como pueden ser el aeronáutico, naval, medio ambiente, ingeniería civil y mecánica, industria química, etc.)Velocimetry procedure by correlation of particle images with spatial resolution smaller than the size of the interrogation window. The present invention consists of a modification of the usual speedometer equipment for particle images (Particle Image Velocimetry or PIV). This modification is a novel procedure for extracting information from the field of displacements from particle images. The problem that solves this new procedure is the obtaining of spatial resolutions smaller than the interrogation window in PIV by correlation (observable effect in Figure 3, series 4, - interrogation windows of 64 pixels-). The new procedure can be applied to any IVP team by numerical correlation. Consequently, its possibility of application covers all fields in which the usual PIV is used (such as aeronautics, naval, environment, civil and mechanical engineering, chemical industry, etc.)

ES9800999A 1998-05-13 1998-05-13 SPEED PROCEDURE FOR CORRELATION OF PARTICLE IMAGES WITH SPACE RESOLUTION LESS THAN THE SIZE OF THE INTERROGATION WINDOW. Expired - Fee Related ES2155331B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES9800999A ES2155331B1 (en) 1998-05-13 1998-05-13 SPEED PROCEDURE FOR CORRELATION OF PARTICLE IMAGES WITH SPACE RESOLUTION LESS THAN THE SIZE OF THE INTERROGATION WINDOW.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES9800999A ES2155331B1 (en) 1998-05-13 1998-05-13 SPEED PROCEDURE FOR CORRELATION OF PARTICLE IMAGES WITH SPACE RESOLUTION LESS THAN THE SIZE OF THE INTERROGATION WINDOW.

Publications (2)

Publication Number Publication Date
ES2155331A1 ES2155331A1 (en) 2001-05-01
ES2155331B1 true ES2155331B1 (en) 2001-12-01

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Application Number Title Priority Date Filing Date
ES9800999A Expired - Fee Related ES2155331B1 (en) 1998-05-13 1998-05-13 SPEED PROCEDURE FOR CORRELATION OF PARTICLE IMAGES WITH SPACE RESOLUTION LESS THAN THE SIZE OF THE INTERROGATION WINDOW.

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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4237440C1 (en) * 1992-11-06 1994-03-10 Deutsche Forsch Luft Raumfahrt Optical imaging system for three=dimensional flow determination - has light source for short time exposure, and stereoscopic video imaging unit with synchronous image shifting by two mirrors which rotate about common axis parallel to line joining entrance-aperture objective lenses
DE4321876C1 (en) * 1993-07-01 1994-10-06 Bodo Dr Ing Ruck Method and device for generating a graphical real-time item of directional information for detected object tracks
JPH08211087A (en) * 1993-08-20 1996-08-20 Hirobumi Onari Device for analyzing visualized picture of flow
DE4408540C1 (en) * 1994-03-14 1995-03-23 Jenoptik Technologie Gmbh Arrangement for optical autocorrelation
US5850485A (en) * 1996-07-03 1998-12-15 Massachusetts Institute Of Technology Sparse array image correlation
JPH1031030A (en) * 1996-07-15 1998-02-03 Ricoh Co Ltd Fluid measurement method
EP0829726B1 (en) * 1996-09-05 2003-04-16 Robert Bosch Gmbh Method and apparatus for determining three dimensional flow structures

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