Thermometry of Spatially Inhomogeneous Methane–Air Flame Using Two-Color Planar Laser-Induced Fluorescence and Coherent Anti-Stokes Raman Scattering Spectroscopy

Using two-color planar laser-induced fluorescence (PLIF) of OH hydroxyl radicals excited at two wavelengths and coherent anti-Stokes Raman scattering (CARS) spectroscopy of H 2 molecules in a laboratory burner, we have measured spatial temperature distributions in the central section of a stationary...

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Bibliographic Details
Published in:Bulletin of the Lebedev Physics Institute 2024-11, Vol.51 (Suppl 6), p.S489-S498
Main Authors: Vereshchagin, K. A., Kobtsev, V. D., Kostritsa, S. A., Kozlov, D. N., Smirnov, V. V., Fabelinsky, V. I.
Format: Article
Language:English
Subjects:
Applications of Lasers and Other Questions of Quantum Electronics
Color
Excitation spectra
Flames
Hydroxyl radicals
Laminar mixing
Methane
Physics
Physics and Astronomy
Planar laser induced fluorescence
Raman spectra
Thermometry
Two dimensional analysis
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Summary:Using two-color planar laser-induced fluorescence (PLIF) of OH hydroxyl radicals excited at two wavelengths and coherent anti-Stokes Raman scattering (CARS) spectroscopy of H 2 molecules in a laboratory burner, we have measured spatial temperature distributions in the central section of a stationary atmospheric laminar flame of a methane–air mixture with partial preliminary mixing of the components. The results of a comparative analysis of the data on two-dimensional PLIF and point CARS thermometry of a spatially inhomogeneous flame are presented, and possibilities of complementary application of these methods for diagnostics are shown.
ISSN:1068-3356
1934-838X
DOI:10.3103/S106833562460164X