Share Email Print

Proceedings Paper

Rayleigh Temperature Profiles In A Hydrogen Diffusion Flame
Author(s): J. R. Smith
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Rayleigh scattering from a hydrogen-air laminar jet diffusion flame in combination with a numerical model of the flame has been used to determine temperature profiles. The model predictions of species concentration are used to calculate a mean Rayleigh cross-section which is used to relate the Rayleigh scattered intensity to temperature. Using an argon ion laser producing 7.5 watts at 488 nm and an optical multichannel analyzer (OMA), the scattered light was imaged into a spectrometer. The OMA was rotated 90 degrees to its normal orientation, allowing scans to be taken along the spectrometer exit slit. This resulted in a spatially resolved Rayleigh signal along the laser beam through the entire flame. Spatial resolution of 0.18 mm on each of the 500 detector elements with good signal-to-noise ratios was achieved even with integration times of only 0.03 second. Since the entire profile is made simultaneously, particulate perturbed profiles are easily recognized and discarded. Transverse profiles are presented to show flame structure. Axial profiles are compared to radiation corrected thermocouple measurements.

Paper Details

Date Published: 9 November 1978
PDF: 7 pages
Proc. SPIE 0158, Laser Spectroscopy: Applications and Techniques, (9 November 1978); doi: 10.1117/12.956819
Show Author Affiliations
J. R. Smith, Sandia Laboratories (United States)

Published in SPIE Proceedings Vol. 0158:
Laser Spectroscopy: Applications and Techniques
Howard R. Schlossberg, Editor(s)

© SPIE. Terms of Use
Back to Top