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Experiments in Fluids

, Volume 49, Issue 6, pp 1375–1391 | Cite as

Phase discrimination method for simultaneous two-phase separation in time-resolved stereo PIV measurements

  • Y. Cheng
  • S. Pothos
  • F. J. DiezEmail author
Research Article

Abstract

A phase discrimination method for two-phase PIV is presented that is capable of simultaneously separating the two phases from time-resolved stereoscopic PIV images taken in a particle-laden jet. The technique developed expands on previous work done by Khalitov and Longmire (Exp Fluids 32:252–268, 2002), where by means of image processing techniques, a raw two-phase PIV image can be separated into two single-phase images according to particle size and intensity distributions. The technique is expanded through the use of three new image processing algorithms to separate particles of similar size (up to an order of magnitude better than published work) for fields of view much larger than previously considered. It also addresses the known problem of noisy background images produced by high-speed CMOS cameras, which makes the particle detection and separation from the noisy background difficult, through the use of a novel fast Fourier transform background filter.

Keywords

Particle Image Velocimetry Particle Image Velocimetry Measurement Interrogation Window Particle Image Velocimetry Image Phase Discrimination 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  1. 1.Rutgers, The State University of New JerseyPiscatawayUSA
  2. 2.TSI IncorporatedShoreviewUSA

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