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- Publisher
- Springer Journals
- Copyright
- Copyright © 2009 by Springer-Verlag
- Subject
- Engineering; Engineering Fluid Dynamics; Fluid- and Aerodynamics; Engineering Thermodynamics, Heat and Mass Transfer
- ISSN
- 0723-4864
- eISSN
- 1432-1114
- DOI
- 10.1007/s00348-009-0668-8
- Publisher site
- See Article on Publisher Site
Abstract
A novel combination of backlighting and glare point velocimetry and sizing (GPVS) is proposed to measure the size distribution of microbubbles (or microdroplets). This new technique, which we will call laser marked shadowgraphy, avoids sizing out-of-focus bubbles (or droplets) and the associated bias error. Compared to backlighting, this combination also improves the precision of the diameter measurement and allows void fraction measurements. Compared with GPVS, a more robust image processing is obtained. The applicability of the developed technique is demonstrated on a cloud of electrochemically generated hydrogen bubbles.
Journal
Experiments in Fluids – Springer Journals
Published: May 13, 2009