Experiments in Fluids

, Volume 29, Issue 4, pp 322–330

Probing the velocity fields of gas and liquid phase simultaneously in a two-phase flow

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

DOI: 10.1007/s003489900079

Cite this article as:
Grünefeld, G., Finke, H., Bartelheimer, J. et al. Experiments in Fluids (2000) 29: 322. doi:10.1007/s003489900079

Abstract

The feasibility of simultaneous measurements of the instantaneous velocity fields of gaseous and liquid phase is demonstrated in a laminar, unsteady two-phase flow. Thus, the instantaneous relative velocity field can be measured in such media. This is achieved by combining Particle Image Velocimetry (PIV) and a gas-phase velocimetry technique, which is based on laser-induced fluorescence (LIF) from a gaseous tracer. The wavelength shift of LIF is exploited to separate it from Mie scattering from the liquid phase. The new technique and the PIV measurement system work independently in this approach. Thus, the measurement accuracy and precision of the new technique can be validated by comparing it to the PIV results in regions of the flow field where the relative velocity vanishes.

Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • G. Grünefeld
    • 1
  • H. Finke
    • 1
  • J. Bartelheimer
    • 1
  • S. Krüger
    • 1
  1. 1.Faculty of Physics, University of Bielefeld Postfach 100131, D-33501 Bielefeld, GermanyDE