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Abstract
This paper was motivated by the need for improved instrumentation to study mixing processes in multi-constituent and multi-phase fluid systems. The development of a single colour camera PIV system that can image micron size spectrally distinct fluorescent droplets in a multi-constituent gas phase flow is reported. Concentrations of fluorescent dyes in solution have been optimised to achieve sufficient fluorescence visibility. The adopted philosophy is to exploit the inherent co-registration offered by a 3-chip colour CCD camera with the images recorded in the three colour planes enabling flow constituent/phase to be determined as well as pulse order. The results show that the spectral discrimination process is robust and in a well mixed gas-phase flow the average error between the flow velocities in the two constituents is < 4%. The use of UV excitation (on suitably excitable dyes) has the added benefit of spectrally separating the excitation wavelength from the imaging bandwidth to allow 'flare removal'.
Original language | English |
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Pages (from-to) | 623-631 |
Number of pages | 9 |
Journal | Experiments in fluids |
Volume | 45 |
Issue number | 4 |
DOIs | |
Publication status | Published - Oct 2008 |
Keywords / Materials (for Non-textual outputs)
- PARTICLE IMAGE VELOCIMETRY
- 2-PHASE FLOW MEASUREMENTS
- SIZING TECHNIQUES
- SYSTEM
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Dive into the research topics of 'Optically efficient fluorescent tracers for multi-constituent PIV'. Together they form a unique fingerprint.Projects
- 1 Finished
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Velocimetry and sizing in multi-constituent flows for full-field macro and microfluidic applications
1/04/04 → 30/09/04
Project: Research