Cavity-enhanced dual-comb spectroscopy for sensitive OH detection in a laminar premixed flame

Sun, Haojia; Wen, Daxin; Cheong, Kin-Pang; Ma, Liuhao; Ni, Kai; Ren, Wei

doi:10.1016/j.proci.2024.105662

Proceedings of the Combustion Institute

2024

DOI: 10.1016/j.proci.2024.105662

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Cavity-enhanced dual-comb spectroscopy for sensitive OH detection in a laminar premixed flame

Haojia Sun,

Daxin Wen,

Kin-Pang Cheong

et al.

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Simultaneous detection of soot, temperature, and C₂H₂ in laminar premixed flames using a multi-pass diode laser absorption spectrometer

Huang,

Gao,

Zhang

et al. 2024

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We report the development of a multi-pass diode laser absorption spectroscopy system for simultaneous measurements of soot volume fraction (SVF), temperature, and C2H2 concentration using a single diode laser near 1.543 µm. A line-shaped beam spot pattern is chosen for the open-path Herriott multi-pass cavity, enabling sensitive detection at various heights above the burner with an effective optical absorption path length of approximately 1.2 m in a 6 cm diameter flame region. The gas parameters (temperature and C2H2 concentration) and the SVF are determined from the absorption spectra of the target C2H2 line pair and the laser extinction of the soot, which can be extracted from the detected signal, respectively. The performance of the system was confirmed in laminar premixed ethylene and air (C2H4/air) sooting flames produced by a standard bronze plug McKenna burner at four representative equivalence ratios. All the measurement results were compared with the two-dimensional (2D) computational fluid dynamics (CFD) simulations using a skeletal mechanism with the Moss−Brookes model. The good quantitative and qualitative agreement between the TDLAS measurements and 2D CFD simulations confirms the powerful capability of the developed system.

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Simultaneous detection of soot, temperature, and C₂H₂ in laminar premixed flames using a multi-pass diode laser absorption spectrometer

Huang,

Gao,

Zhang

et al. 2024

Opt. Express

View full text Add to dashboard Cite

show abstract

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Cavity-enhanced dual-comb spectroscopy for sensitive OH detection in a laminar premixed flame

Cited by 1 publication

References 24 publications

Simultaneous detection of soot, temperature, and C₂H₂ in laminar premixed flames using a multi-pass diode laser absorption spectrometer

Simultaneous detection of soot, temperature, and C₂H₂ in laminar premixed flames using a multi-pass diode laser absorption spectrometer

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Cavity-enhanced dual-comb spectroscopy for sensitive OH detection in a laminar premixed flame

Cited by 1 publication

References 24 publications

Simultaneous detection of soot, temperature, and C2H2 in laminar premixed flames using a multi-pass diode laser absorption spectrometer

Simultaneous detection of soot, temperature, and C2H2 in laminar premixed flames using a multi-pass diode laser absorption spectrometer

Contact Info

Product

Resources

About

Simultaneous detection of soot, temperature, and C₂H₂ in laminar premixed flames using a multi-pass diode laser absorption spectrometer

Simultaneous detection of soot, temperature, and C₂H₂ in laminar premixed flames using a multi-pass diode laser absorption spectrometer