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

Fujio Yamamoto, Tomomasa Uemura, Kuniyasu Ogawa, Kazuo Ohmi

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)3826-3831
Number of pages6
JournalTransactions of the Japan Society of Mechanical Engineers Series B
Volume57
Issue number543
DOIs
Publication statusPublished - 1991 Jan 1
Externally publishedYes

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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