Improvement of Measurement Accuracy of Particle Tracking Velocimetry Using Binary Correlation Method

Fujio Yamamoto; Tomomasa Uemura; Kuniyasu Ogawa; Kazuo Ohmi

doi:10.1299/kikaib.57.3826

Improvement of Measurement Accuracy of Particle Tracking Velocimetry Using Binary Correlation Method

Fujio Yamamoto, Tomomasa Uemura, Kuniyasu Ogawa, Kazuo Ohmi

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

The digital image processing techniques of particle tracking velocimetry (PTV) have been developed rapidly, because they can realize the real-time and contact-free measurement of instantaneous two- or three-dimensional velocity fields. The measurement accuracy by these techniques is still insufficient. In the present study a new simplified double-check method is proposed to correct mismatched particle pairs which are found in the results of velocity vectors when applying a cross-correlation method. As a result, almost all mismatched particle pairs are replaced by correct ones, and the accuracy of the velocity field measurement can be improved. Some suggestions are given as to proper particle size and particle distribution density.

Original language	English
Pages (from-to)	3826-3831
Number of pages	6
Journal	Transactions of the Japan Society of Mechanical Engineers Series B
Volume	57
Issue number	543
DOIs	https://doi.org/10.1299/kikaib.57.3826
Publication status	Published - 1991
Externally published	Yes

Keywords

Accuracy Improvement
Cross-Correlation Method
Digital Image Processing
Flow Measurement
Two-dimensional Velocity

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering

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10.1299/kikaib.57.3826

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title = "Improvement of Measurement Accuracy of Particle Tracking Velocimetry Using Binary Correlation Method",

abstract = "The digital image processing techniques of particle tracking velocimetry (PTV) have been developed rapidly, because they can realize the real-time and contact-free measurement of instantaneous two- or three-dimensional velocity fields. The measurement accuracy by these techniques is still insufficient. In the present study a new simplified double-check method is proposed to correct mismatched particle pairs which are found in the results of velocity vectors when applying a cross-correlation method. As a result, almost all mismatched particle pairs are replaced by correct ones, and the accuracy of the velocity field measurement can be improved. Some suggestions are given as to proper particle size and particle distribution density.",

keywords = "Accuracy Improvement, Cross-Correlation Method, Digital Image Processing, Flow Measurement, Two-dimensional Velocity",

author = "Fujio Yamamoto and Tomomasa Uemura and Kuniyasu Ogawa and Kazuo Ohmi",

year = "1991",

doi = "10.1299/kikaib.57.3826",

language = "English",

volume = "57",

pages = "3826--3831",

journal = "Transactions of the Japan Society of Mechanical Engineers Series B",

issn = "0387-5016",

publisher = "Japan Society of Mechanical Engineers",

number = "543",

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TY - JOUR

T1 - Improvement of Measurement Accuracy of Particle Tracking Velocimetry Using Binary Correlation Method

AU - Yamamoto, Fujio

AU - Uemura, Tomomasa

AU - Ogawa, Kuniyasu

AU - Ohmi, Kazuo

PY - 1991

Y1 - 1991

N2 - The digital image processing techniques of particle tracking velocimetry (PTV) have been developed rapidly, because they can realize the real-time and contact-free measurement of instantaneous two- or three-dimensional velocity fields. The measurement accuracy by these techniques is still insufficient. In the present study a new simplified double-check method is proposed to correct mismatched particle pairs which are found in the results of velocity vectors when applying a cross-correlation method. As a result, almost all mismatched particle pairs are replaced by correct ones, and the accuracy of the velocity field measurement can be improved. Some suggestions are given as to proper particle size and particle distribution density.

AB - The digital image processing techniques of particle tracking velocimetry (PTV) have been developed rapidly, because they can realize the real-time and contact-free measurement of instantaneous two- or three-dimensional velocity fields. The measurement accuracy by these techniques is still insufficient. In the present study a new simplified double-check method is proposed to correct mismatched particle pairs which are found in the results of velocity vectors when applying a cross-correlation method. As a result, almost all mismatched particle pairs are replaced by correct ones, and the accuracy of the velocity field measurement can be improved. Some suggestions are given as to proper particle size and particle distribution density.

KW - Accuracy Improvement

KW - Cross-Correlation Method

KW - Digital Image Processing

KW - Flow Measurement

KW - Two-dimensional Velocity

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Improvement of Measurement Accuracy of Particle Tracking Velocimetry Using Binary Correlation Method

Abstract

Keywords

ASJC Scopus subject areas

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