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Title: Development of a two-line OH-laser-induced fluorescence thermometry diagnostics strategy for gas-phase temperature measurements in engines

Abstract

This study aims at optimizing two-line OH thermometry strategies for in-cylinder measurement in internal combustion engines. Various aspects are investigated experimentally, such as the selection of suitable OH lines and the possibility of using a single calibration coefficient for variable mixture composition, temperature, and pressure conditions. Two kinds of experimental systems have been investigated. First, a laminar methane-air burner flame at atmospheric pressure, whose stability allowed the determination of OH-laser-induced fluorescence (LIF) intensity ratios from nonsimultaneous imaging. The temperature distribution in the flame is presented for OH-transition pairs with various temperature sensitivities. The burner flame was studied for equivalence ratios from {phi}=0.93 to 1.30 in order to check for the stability of calibration over various flame conditions. Additionally, OH LIF images were acquired in an optical engine for the chosen OH transitions yielding data about the effect of pressure on OH LIF signals under realistic experimental conditions.

Authors:
; ;
Publication Date:
OSTI Identifier:
21175715
Resource Type:
Journal Article
Journal Name:
Applied Optics
Additional Journal Information:
Journal Volume: 47; Journal Issue: 31; Other Information: DOI: 10.1364/AO.47.005871; (c) 2008 Optical Society of America; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6935
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; ATMOSPHERIC PRESSURE; BURNERS; CALIBRATION; FLAMES; FLUORESCENCE; FLUORESCENCE SPECTROSCOPY; INTERNAL COMBUSTION ENGINES; LASERS; METHANE; SENSITIVITY; SIGNALS; TEMPERATURE DISTRIBUTION; TEMPERATURE MEASUREMENT

Citation Formats

Devillers, R, Bruneaux, G, and Schulz, C. Development of a two-line OH-laser-induced fluorescence thermometry diagnostics strategy for gas-phase temperature measurements in engines. United States: N. p., 2008. Web. doi:10.1364/AO.47.005871.
Devillers, R, Bruneaux, G, & Schulz, C. Development of a two-line OH-laser-induced fluorescence thermometry diagnostics strategy for gas-phase temperature measurements in engines. United States. https://doi.org/10.1364/AO.47.005871
Devillers, R, Bruneaux, G, and Schulz, C. 2008. "Development of a two-line OH-laser-induced fluorescence thermometry diagnostics strategy for gas-phase temperature measurements in engines". United States. https://doi.org/10.1364/AO.47.005871.
@article{osti_21175715,
title = {Development of a two-line OH-laser-induced fluorescence thermometry diagnostics strategy for gas-phase temperature measurements in engines},
author = {Devillers, R and Bruneaux, G and Schulz, C},
abstractNote = {This study aims at optimizing two-line OH thermometry strategies for in-cylinder measurement in internal combustion engines. Various aspects are investigated experimentally, such as the selection of suitable OH lines and the possibility of using a single calibration coefficient for variable mixture composition, temperature, and pressure conditions. Two kinds of experimental systems have been investigated. First, a laminar methane-air burner flame at atmospheric pressure, whose stability allowed the determination of OH-laser-induced fluorescence (LIF) intensity ratios from nonsimultaneous imaging. The temperature distribution in the flame is presented for OH-transition pairs with various temperature sensitivities. The burner flame was studied for equivalence ratios from {phi}=0.93 to 1.30 in order to check for the stability of calibration over various flame conditions. Additionally, OH LIF images were acquired in an optical engine for the chosen OH transitions yielding data about the effect of pressure on OH LIF signals under realistic experimental conditions.},
doi = {10.1364/AO.47.005871},
url = {https://www.osti.gov/biblio/21175715}, journal = {Applied Optics},
issn = {0003-6935},
number = 31,
volume = 47,
place = {United States},
year = {Sat Nov 01 00:00:00 EDT 2008},
month = {Sat Nov 01 00:00:00 EDT 2008}
}