Quantitative Measurements of Chemiluminescence in a Laminar Methane-Air Premixed Flame and Comparison to Numerical Methods

Kuanliang Wang; Fei Li; Yi Wu; Xilong Yu

doi:10.1021/acs.energyfuels.7b03484

Quantitative Measurements of Chemiluminescence in a Laminar Methane-Air Premixed Flame and Comparison to Numerical Methods

Kuanliang Wang, Fei Li^*, Yi Wu, Xilong Yu

^*Corresponding author for this work

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

10 Citations (Scopus)

Abstract

Quantitative measurements of chemiluminescence emissions as a result of CH∗, OH∗, C₂∗, and CO₂∗ were conducted in CH₄/air premixed flames at different equivalence ratios (θ = 0.7-1.33), and numerical results based on one-dimensional flame simulations were compared to these data. A wavelength-dependent and optical-path-corrected emission calibration method was applied to quantify the emission of each excited species. The numerically simulated emission intensities of OH∗ and CH∗ are within the same order of magnitude as the experimental values for the same flame conditions. When self-absorption and cooling water thermosteresis are taken into account, the simulated OH∗ values are 1.0-1.4 times greater than the experimental results, while the CH∗ values are approximately 2.3-4.1 times greater. These findings suggest that more work is required to refine the temperature dependence factors for the CH∗ formation rate coefficients at high temperatures.

Original language	English
Pages (from-to)	5536-5543
Number of pages	8
Journal	Energy and Fuels
Volume	32
Issue number	4
DOIs	https://doi.org/10.1021/acs.energyfuels.7b03484
Publication status	Published - 19 Apr 2018
Externally published	Yes

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10.1021/acs.energyfuels.7b03484

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title = "Quantitative Measurements of Chemiluminescence in a Laminar Methane-Air Premixed Flame and Comparison to Numerical Methods",

abstract = "Quantitative measurements of chemiluminescence emissions as a result of CH∗, OH∗, C2∗, and CO2∗ were conducted in CH4/air premixed flames at different equivalence ratios (θ = 0.7-1.33), and numerical results based on one-dimensional flame simulations were compared to these data. A wavelength-dependent and optical-path-corrected emission calibration method was applied to quantify the emission of each excited species. The numerically simulated emission intensities of OH∗ and CH∗ are within the same order of magnitude as the experimental values for the same flame conditions. When self-absorption and cooling water thermosteresis are taken into account, the simulated OH∗ values are 1.0-1.4 times greater than the experimental results, while the CH∗ values are approximately 2.3-4.1 times greater. These findings suggest that more work is required to refine the temperature dependence factors for the CH∗ formation rate coefficients at high temperatures.",

author = "Kuanliang Wang and Fei Li and Yi Wu and Xilong Yu",

note = "Publisher Copyright: {\textcopyright} 2018 American Chemical Society.",

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doi = "10.1021/acs.energyfuels.7b03484",

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T1 - Quantitative Measurements of Chemiluminescence in a Laminar Methane-Air Premixed Flame and Comparison to Numerical Methods

AU - Wang, Kuanliang

AU - Li, Fei

AU - Wu, Yi

AU - Yu, Xilong

PY - 2018/4/19

Y1 - 2018/4/19

N2 - Quantitative measurements of chemiluminescence emissions as a result of CH∗, OH∗, C2∗, and CO2∗ were conducted in CH4/air premixed flames at different equivalence ratios (θ = 0.7-1.33), and numerical results based on one-dimensional flame simulations were compared to these data. A wavelength-dependent and optical-path-corrected emission calibration method was applied to quantify the emission of each excited species. The numerically simulated emission intensities of OH∗ and CH∗ are within the same order of magnitude as the experimental values for the same flame conditions. When self-absorption and cooling water thermosteresis are taken into account, the simulated OH∗ values are 1.0-1.4 times greater than the experimental results, while the CH∗ values are approximately 2.3-4.1 times greater. These findings suggest that more work is required to refine the temperature dependence factors for the CH∗ formation rate coefficients at high temperatures.

AB - Quantitative measurements of chemiluminescence emissions as a result of CH∗, OH∗, C2∗, and CO2∗ were conducted in CH4/air premixed flames at different equivalence ratios (θ = 0.7-1.33), and numerical results based on one-dimensional flame simulations were compared to these data. A wavelength-dependent and optical-path-corrected emission calibration method was applied to quantify the emission of each excited species. The numerically simulated emission intensities of OH∗ and CH∗ are within the same order of magnitude as the experimental values for the same flame conditions. When self-absorption and cooling water thermosteresis are taken into account, the simulated OH∗ values are 1.0-1.4 times greater than the experimental results, while the CH∗ values are approximately 2.3-4.1 times greater. These findings suggest that more work is required to refine the temperature dependence factors for the CH∗ formation rate coefficients at high temperatures.

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JO - Energy and Fuels

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Quantitative Measurements of Chemiluminescence in a Laminar Methane-Air Premixed Flame and Comparison to Numerical Methods

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