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A Single-Beam Velocimeter Based on Rainbow-Interferometry

  • J. P. A. J. van Beek
  • Rieth Muller
Conference paper

Abstract

A velocimeter which consists of one laser beam and one photomultiplier is proposed. The instrument is based on the primary rainbow created by a transparent particle illuminated by a laser beam; this rainbow moves in front of a photomultiplier when the particle traverses the laser beam. Frequency analysis of the recorded signal leads to the droplet size and to one component of the velocity vector. Validation experiments have been carried out using a spherical glass bead. To improve the measurements with water droplets, a nonsphericity detection is proposed by adding one photomultiplier.

Keywords

Droplet velocity Droplet Size Rainbow Technique 

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References

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Copyright information

© Springer-Verlag Berlin Heidelberg 1997

Authors and Affiliations

  • J. P. A. J. van Beek
    • 1
  • Rieth Muller
    • 1
  1. 1.von Karman Institute for Fluid DynamicsRhoide-Saint-GenèseBelgium

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