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Proceedings Paper

Infrared characterization of jet engine exhaust plumes
Author(s): Edward Lamar Nelson; J. Robert Mahan; Jeffrey A. Turk; Robert R. Hardman; Larry D. Birckelbaw; Paul A. Gelhausen
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Paper Abstract

The focus of current research is the measurement, modeling, and simulation of the spatial, temporal and spectral behavior of gaseous radiation from a jet engine exhaust plume. Infrared imaging using a scanning infrared camera has been used as a flow visualization technique. Also, an infrared band model code has been developed to relate field variables to infrared emission. The model has been validated by comparisons with other infrared band models and by comparisons with experimental data. Finally, a free-jet apparatus has been constructed based on an auxiliary power unit, and a computer code has been developed for converting the experimentally measured exhaust plume temperature distribution to the corresponding infrared image. These efforts represent work in progress. The goals of this research are to better understand infrared imaging of exhaust plumes, to correctly model the infrared emission from exhaust plumes given knowledge of the temperature, pressure, and species distribution of the flow field, and finally to use this model to validate CFD codes through comparison of predicted and observed infrared images.

Paper Details

Date Published: 13 August 1993
PDF: 8 pages
Proc. SPIE 1967, Characterization, Propagation, and Simulation of Sources and Backgrounds III, (13 August 1993); doi: 10.1117/12.151063
Show Author Affiliations
Edward Lamar Nelson, Virginia Polytechnic Institute and State Univ. (United States)
J. Robert Mahan, Virginia Polytechnic Institute and State Univ. (United States)
Jeffrey A. Turk, Virginia Polytechnic Institute and State Univ. (United States)
Robert R. Hardman, Southern Company Services, Inc. (United States)
Larry D. Birckelbaw, NASA Ames Research Ctr. (United States)
Paul A. Gelhausen, NASA Ames Research Ctr. (United States)


Published in SPIE Proceedings Vol. 1967:
Characterization, Propagation, and Simulation of Sources and Backgrounds III
Wendell R. Watkins; Dieter Clement, Editor(s)

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