A NEW METHOD FOR TEMPERATURE MEASUREMENTS OF DROPLETS

Schaller, J. K.; Wassenberg, S.; Fiedler, O. K.; Stojanoff, C.G.

ICLASS 94
Proceedings of the Sixth International Conference on Liquid Atomization and Spray Systems

ISBN Imprimir: 978-1-56700-019-1

ISBN En Línea: 978-1-56700-445-5

A NEW METHOD FOR TEMPERATURE MEASUREMENTS OF DROPLETS

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J. K. Schaller Lehr-und Forschungsgebiet Hochtemperaturthermodynamik Aachen, Germany

S. Wassenberg Lehr-und Forschungsgebiet Hochtemperaturthermodynamik Aachen, Germany

O. K. Fiedler Lehr-und Forschungsgebiet Hochtemperaturthermodynamik Aachen, Germany

C.G. Stojanoff Lehr-und Forschungsgebiet Hochtemperaturthermodynamik Aachen, Germany

Sinopsis

A new method for the determination of the temperature of single droplets is presented. The method utilizes the analysis of the near field scattered light distribution. This distribution exhibits sharp peaks, the so called glare points, if observed through a lens with finite aperture. The ratio of the brightnesses of the glare points of the zeroth and the first orders shows a monotonic dependence on the index of refraction. The ratio is measured and the temperature is calculated by means of the known dependence of the index of refraction on the temperature.

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