PIV measurements in near-wake turbulent regions

Wei Cheng Chen, Keh Chin Chang

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Particle image velocimetry (PIV) is a non-intrusive optical diagnostic and must be made of the seedings (foreign particles) instead of the fluid itself. However, reliable PIV measurement of turbulence requires sufficient numbers of seeding falling in each interrogation window of image. A gray-level criterion is developed in this work to check the attainment of statistically stationary status of turbulent flow properties. It is suggested that the gray level of no less than 0.66 is used as the threshold for reliable PIV measurements in the present near-wake turbulent regions.

Original languageEnglish
Article number1840026
JournalModern Physics Letters B
Issue number12-13
Publication statusPublished - 2018 May 10

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics


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