Authors: D A AngaritaJaimes M P Ormsby M Chennaoui N C AngaritaJaimes C E Towers A C Jones D P Towers
Publish Date: 2008/09/10
Volume: 45, Issue: 4, Pages: 623-
Abstract
This paper was motivated by the need for improved instrumentation to study mixing processes in multiconstituent and multiphase fluid systems The development of a single colour camera PIV system that can image micron size spectrally distinct fluorescent droplets in a multiconstituent 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 coregistration offered by a 3chip 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 gasphase 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’
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