Experiments in Fluids

, Volume 29, Issue 3, pp 238–246

Gas-phase velocity field measurements in sprays without particle seeding

  • G. Grünefeld
  • J. Bartelheimer
  • H. Finke
  • S. Krüger

DOI: 10.1007/s003489900080

Cite this article as:
Grünefeld, G., Bartelheimer, J., Finke, H. et al. Experiments in Fluids (2000) 29: 238. doi:10.1007/s003489900080

Abstract

A laser-based technique is presented that can be used to measure the instantaneous velocity field of the continuous phase in sprays and aerosols. In contrast to most well established laser-based velocity measurement techniques, this method is independent of particle seeding and Mie scattering. Instead of that it is based on gaseous flow tracers and laser-induced fluorescence (LIF). Inhomogeneous tracer gas distributions, which are created by an incomplete, turbulent mixing process, are exploited for flow tracing. The velocity field can be measured close to the droplets, because frequency-shifted LIF is separated from Mie scattering by optical filters. Validation tests and results from a water spray in air are given. Accuracy and spatial resolution are discussed in detail.

Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • G. Grünefeld
    • 1
  • J. Bartelheimer
    • 1
  • H. Finke
    • 1
  • S. Krüger
    • 1
  1. 1.University of Bielefeld, Faculty of Physics Postfach 100131, D-33501 Bielefeld, Germany Tel.: 49-521-1065442, Fax: 49-521-1062958DE

Personalised recommendations