2-D Measurements of the Liquid Phase Temperature in Fuel Sprays

Paper #:
  • 950461

Published:
  • 1995-02-01
Citation:
Yoshizaki, T., Funahashi, T., Nishida, K., and Hiroyasu, H., "2-D Measurements of the Liquid Phase Temperature in Fuel Sprays," SAE Technical Paper 950461, 1995, https://doi.org/10.4271/950461.
Pages:
14
Abstract:
Cross-sectional distributions of the liquid phase temperatures in fuel sprays were measured using a laser-induced fluorescence technique. The liquid fuel (n-hexadecane or squalane) was doped with pyrene(C16H10). The fluorescence intensity ratios of the pyrene monomer and excimer emissions has temperature dependence, and were used to determine the liquid phase temperatures in the fuel sprays. The measurements were performed on two kinds of sprays. One was performed on pre-heated fuel sprays injected into surrounding gas at atmospheric conditions. The other was performed on fuel sprays exposed to hot gas flow. The spray was excited by laser radiation at 266nm, and the resulting fluorescence was imaged by an intensified CCD camera. The cross-sectional distribution of the liquid phase temperature was estimated from the fluorescence image by the temperature dependence of the intensity ratio. The results demonstrate that this laser-based thermometry technique is available for 2-D measurements of the liquid phase temperature in fuel sprays.
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