Coherent Anti-Stokes Raman Scattering (CARS) Thermometry in a Model Gas Turbine Can Combustor

[+] Author and Article Information
J. Y. Zhu, T. Tsuruda, W. A. Sowa, G. S. Samuelsen

UCI Combustion Laboratory, University of California, Irvine, Irvine, CA 92717-3550

J. Eng. Gas Turbines Power 115(3), 515-521 (Jul 01, 1993) (7 pages) doi:10.1115/1.2906738 History: Received February 06, 1992; Online April 24, 2008


Nonintrusive, spatially resolved instantaneous temperature measurements are presented that were obtained from a reacting spray flame in a model gas turbine can combustor using coherent anti-Stokes Raman scattering (CARS) thermometry. The results show that CARS measurements agree with thermocouple measurements at the exit of the combustor. The liquid droplet induced dielectric breakdown is not an obstacle in applying CARS to reacting sprays. The CARS measured temperature field also indicates that there is a relatively cool region (T < 1000 K) near the nozzle tip. Reaction occurs in the region where large numbers of droplets are present and in the interface of the swirl-induced recirculation zone. This study demonstrates that CARS is a viable diagnostic tool for nonintrusive, instantaneous temperature measurements in practical spray flames.

Copyright © 1993 by The American Society of Mechanical Engineers
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