title: Global rainbow thermometry: improvements in the data inversion algorithm and validation technique in liquid-liquid suspension.
abstract: Improvements on the validation of a nonintrusive laser-based measurement technique are presented. This new technique, called global rainbow thermometry (GRT), is capable of determining the temperature and the size distributions of liquid droplets dispersed in a liquid or gaseous bulk. We propose a new data inversion algorithm that takes into account the whole rainbow pattern. Experimental validation of the GRT technique is performed for a liquid-liquid suspension. We performed the validation by comparing the measurements obtained with the GRT technique for the mean droplet temperature and size with the results obtained with alternative techniques.
authors.affiliation: von Karman Institute for Fluid Dynamics, Chaussée de Waterloo 72, Rhode Saint Genèse B1640, Belgium. vetrano@vki.ac.be
authors.forename: Maria Rosaria
authors.initials: MR
authors.lastname: Vetrano
authors.forename: Jeronimus Petrus Antonius Johannes
authors.initials: JP
authors.lastname: van Beeck
authors.forename: Michel Léon
authors.initials: ML
authors.lastname: Riethmuller