Development of a dual-pump coherent anti-Stokes Raman spectroscopy system for measurements in supersonic combustion

Gaetano Magnotti; Andrew D. Cutler; Paul M. Danehy

doi:10.1364/AO.52.004779

Development of a dual-pump coherent anti-Stokes Raman spectroscopy system for measurements in supersonic combustion

Gaetano Magnotti^*, Andrew D. Cutler, Paul M. Danehy

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

This work describes the development of a dual-pump coherent anti-Stokes Raman spectroscopy system for simultaneous measurements of the temperature and the absolute mole fraction of N₂, O₂, and H₂ in supersonic combusting flows. Changes to the experimental setup and the data analysis to improve the quality of the measurements in this turbulent, high-temperature reacting flow are described. The accuracy and precision of the instrument have been determined using data collected in a Hencken burner flame. For temperatures above 800 K, errors in the absolute mole fraction are within 1.5%, 0.5%, and 1% of the total composition for N₂, O₂, and H₂, respectively. Standard deviations based on 500 single shots are between 10 and 65 K for the temperature, between 0.5% and 1.7% of the total composition for O₂, and between 1.5% and 3.4% for N₂. The standard deviation of H₂ is ∼10% of the average measured mole fraction.

Original language	English (US)
Pages (from-to)	4779-4791
Number of pages	13
Journal	Applied Optics
Volume	52
Issue number	20
DOIs	https://doi.org/10.1364/AO.52.004779
State	Published - Jul 10 2013
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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title = "Development of a dual-pump coherent anti-Stokes Raman spectroscopy system for measurements in supersonic combustion",

abstract = "This work describes the development of a dual-pump coherent anti-Stokes Raman spectroscopy system for simultaneous measurements of the temperature and the absolute mole fraction of N2, O2, and H2 in supersonic combusting flows. Changes to the experimental setup and the data analysis to improve the quality of the measurements in this turbulent, high-temperature reacting flow are described. The accuracy and precision of the instrument have been determined using data collected in a Hencken burner flame. For temperatures above 800 K, errors in the absolute mole fraction are within 1.5%, 0.5%, and 1% of the total composition for N2, O2, and H2, respectively. Standard deviations based on 500 single shots are between 10 and 65 K for the temperature, between 0.5% and 1.7% of the total composition for O2, and between 1.5% and 3.4% for N2. The standard deviation of H2 is ∼10% of the average measured mole fraction.",

author = "Gaetano Magnotti and Cutler, {Andrew D.} and Danehy, {Paul M.}",

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doi = "10.1364/AO.52.004779",

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AU - Magnotti, Gaetano

AU - Cutler, Andrew D.

AU - Danehy, Paul M.

PY - 2013/7/10

Y1 - 2013/7/10

N2 - This work describes the development of a dual-pump coherent anti-Stokes Raman spectroscopy system for simultaneous measurements of the temperature and the absolute mole fraction of N2, O2, and H2 in supersonic combusting flows. Changes to the experimental setup and the data analysis to improve the quality of the measurements in this turbulent, high-temperature reacting flow are described. The accuracy and precision of the instrument have been determined using data collected in a Hencken burner flame. For temperatures above 800 K, errors in the absolute mole fraction are within 1.5%, 0.5%, and 1% of the total composition for N2, O2, and H2, respectively. Standard deviations based on 500 single shots are between 10 and 65 K for the temperature, between 0.5% and 1.7% of the total composition for O2, and between 1.5% and 3.4% for N2. The standard deviation of H2 is ∼10% of the average measured mole fraction.

AB - This work describes the development of a dual-pump coherent anti-Stokes Raman spectroscopy system for simultaneous measurements of the temperature and the absolute mole fraction of N2, O2, and H2 in supersonic combusting flows. Changes to the experimental setup and the data analysis to improve the quality of the measurements in this turbulent, high-temperature reacting flow are described. The accuracy and precision of the instrument have been determined using data collected in a Hencken burner flame. For temperatures above 800 K, errors in the absolute mole fraction are within 1.5%, 0.5%, and 1% of the total composition for N2, O2, and H2, respectively. Standard deviations based on 500 single shots are between 10 and 65 K for the temperature, between 0.5% and 1.7% of the total composition for O2, and between 1.5% and 3.4% for N2. The standard deviation of H2 is ∼10% of the average measured mole fraction.

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Development of a dual-pump coherent anti-Stokes Raman spectroscopy system for measurements in supersonic combustion

Abstract

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