Simultaneous Measurements of Concentration and Temperature Distributions in Unsteady Gas Jets by an Iodine LIF Method

Paper #:
  • 980146

Published:
  • 1998-02-01
Citation:
Kido, A., Kubota, S., Ogawa, H., and Miyamoto, N., "Simultaneous Measurements of Concentration and Temperature Distributions in Unsteady Gas Jets by an Iodine LIF Method," SAE Technical Paper 980146, 1998, https://doi.org/10.4271/980146.
Pages:
11
Abstract:
A new method to simultaneously measure temperature and concentration distributions in unsteady gas jets was established with an adaptation of the laser-induced fluorescence of iodine molecules seeded into ambient gas. Using the temperature dependence of iodine fluorescence spectra, the local temperature inside jets was determined with the ratio between the fluorescence intensities of two visualized images with different wavelengths. Jet concentrations were also determined with the images for the temperature measurements. The method was applied to an unsteady argon jet injected into hot argon-iodine ambient gases. The experimental results showed that the local temperature distribution in an unsteady gas jet were quite similar to the local concentration distributions.
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