Experiments in Fluids

, Volume 39, Issue 2, pp 407–419 | Cite as

Extended glare point velocimetry and sizing for bubbly flows

  • S. Dehaeck
  • J. P. A. J. van Beeck
  • M. L. Riethmuller


A novel measuring technique for bubbly flows, named glare point velocimetry and sizing (GPVS), was developed in order to measure both bubble size and velocity with high accuracy in a 2D plane. This is accomplished by observing glare points in-focus under an observation angle of 96°. When a second laser-sheet is added, even higher accuracies are obtained and the relative refractive index of the bubble can be measured. It also allows non-spherical bubbles to be rejected and arbitrary angles to be used (e.g. 90°). The accuracy of the size and refractive index measurements was found to be within 1.3%.



This research was funded with fellowship SB-031241 granted by the Flemish Institute for the Promotion of Scientific and Technological Research in the Industry (IWT).


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Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  • S. Dehaeck
    • 1
    • 2
  • J. P. A. J. van Beeck
    • 1
  • M. L. Riethmuller
    • 1
  1. 1.Von Karman Institute for Fluid DynamicsSint-Genesius-RodeBelgium
  2. 2.Department of Flow, Heat and Combustion MechanicsGhent UniversityGentBelgium

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