Global rainbow thermometry: improvements in the data inversion algorithm and validation technique in liquid-liquid suspension.
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.
Vetrano
Maria Rosaria
MR
von Karman Institute for Fluid Dynamics, Chaussée de Waterloo 72, Rhode Saint Genèse B1640, Belgium. vetrano@vki.ac.be
van Beeck
Jeronimus Petrus Antonius Johannes
JP
Riethmuller
Michel Léon
ML