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Proceedings Paper

Rapid determination of flame temperature profiles using OH LIF on a limited number of rotational lines
Author(s): Bradley A. Williams; James W. Fleming
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Paper Abstract

Temperature profiles determined from LIF spatial profiles of six lines [A - X (1-0) band: R1(3), R1(10), R2(5), R2(8), R2(10), and P1(2)] agree well with values obtained from LIF spectral scans (282.6 - 281.0 nm) at fixed burner height in the luminous and post-flame zones. Typical uncertainties by this method are +/- 50 - 75 K which are satisfactory for purposes of flame modeling. Fewer lines did not consistently give good agreement. In the preheat zone, the profile method is subject to several systematic errors due in part to the high thermal and OH concentration gradients which affect any temperature measurement in this region. Temperature profiles can be obtained much faster and with similar accuracy using this method than those derived from an excitation spectrum for each desired position in the flame. The method is particularly attractive when temperature profiles for several different flames are desired.

Paper Details

Date Published: 18 March 1994
PDF: 5 pages
Proc. SPIE 2122, Laser Applications in Combustion and Combustion Diagnostics II, (18 March 1994); doi: 10.1117/12.171301
Show Author Affiliations
Bradley A. Williams, Naval Research Lab. (United States)
James W. Fleming, Naval Research Lab. (United States)

Published in SPIE Proceedings Vol. 2122:
Laser Applications in Combustion and Combustion Diagnostics II
Randy J. Locke, Editor(s)

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