PIV measurements in near-wake turbulent regions

Wei Cheng Chen, Keh Chin Chang

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)

摘要

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.

原文English
文章編號1840026
期刊Modern Physics Letters B
32
發行號12-13
DOIs
出版狀態Published - 2018 5月 10

All Science Journal Classification (ASJC) codes

  • 統計與非線性物理學
  • 凝聚態物理學

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