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Experiments in Fluids

, 45:623 | Cite as

Optically efficient fluorescent tracers for multi-constituent PIV

  • D. A. Angarita-Jaimes
  • M. P. Ormsby
  • M. Chennaoui
  • N. C. Angarita-Jaimes
  • C. E. Towers
  • A. C. Jones
  • D. P. Towers
Research Article

Abstract

This paper was motivated by the need for improved instrumentation to study mixing processes in multi-constituent and multi-phase fluid systems. The development of a single colour camera PIV system that can image micron size spectrally distinct fluorescent droplets in a multi-constituent gas phase flow is reported. Concentrations of fluorescent dyes in solution have been optimised to achieve sufficient fluorescence visibility. The adopted philosophy is to exploit the inherent co-registration offered by a 3-chip colour CCD camera with the images recorded in the three colour planes enabling flow constituent/phase to be determined as well as pulse order. The results show that the spectral discrimination process is robust and in a well mixed gas-phase flow the average error between the flow velocities in the two constituents is <4%. The use of UV excitation (on suitably excitable dyes) has the added benefit of spectrally separating the excitation wavelength from the imaging bandwidth to allow ‘flare removal’.

Keywords

Drop Size Colour Channel Droplet Size Distribution Green Channel Colour Camera 
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.

Notes

Acknowledgments

The authors would like to thank the Engineering and Physical Sciences Research Council (EPSRC) for funding under grant reference GR/S69108.

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Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • D. A. Angarita-Jaimes
    • 1
  • M. P. Ormsby
    • 1
  • M. Chennaoui
    • 2
  • N. C. Angarita-Jaimes
    • 1
  • C. E. Towers
    • 1
  • A. C. Jones
    • 2
  • D. P. Towers
    • 1
  1. 1.School of Mechanical EngineeringUniversity of LeedsLeedsUK
  2. 2.School of ChemistryUniversity of EdinburghEdinburghUK

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