Experiments in Fluids

, Volume 14, Issue 3, pp 181–192 | Cite as

High image-density particle image velocimetry using laser scanning techniques

  • D. Rockwell
  • C. Magness
  • J. Towfighi
  • O. Akin
  • T. Corcoran


Laser scanning, corresponding to time-dependent deflections of laser beam across a field of interest, can provide relatively high illumination intensity of small particles, thereby allowing implementation of high image-density particle image velocimetry (PIV). Scanning techniques employing a rotating (multi-faceted) mirror, an oscillating mirror, and an acousto-optic deflector are addressed. Issues of illumination intensity and exposure, rate of scan of the laser beam, and retrace time of the scanning beam are assessed. Representative classes of unsteady separated flows investigated with laser-scanning PIV are described.


Laser Beam Small Particle Laser Scanning Particle Image Velocimetry Particle Image 
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Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • D. Rockwell
    • 1
  • C. Magness
    • 1
  • J. Towfighi
    • 1
  • O. Akin
    • 1
  • T. Corcoran
    • 1
  1. 1.Department of Mechanical Engineering and MechanicsLehigh UniversityBethlehem

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