Simultaneous measurements of burning velocity and temperature distribution of combustion using UV laser Rayleigh scattering

Jin, Seong-Ho and Kim, Gyung-Soo (2020) Simultaneous measurements of burning velocity and temperature distribution of combustion using UV laser Rayleigh scattering. Measurement, 169 . p. 108505. ISSN 0263-2241

Full content URL: https://doi.org/10.1016/j.measurement.2020.108505

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Simultaneous measurements of burning velocity and temperature distribution of combustion using UV laser Rayleigh scattering
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Abstract

Planar temperature images using laser Rayleigh scattering have been obtained to determine the spatial distribution of temperature in a constant volume combustion chamber. Burning velocities were also measured from measured pressures and calculated flame surface area from Rayleigh scattering images. A high power KrF excimer laser was used as a light source and a high gain ICCD camera was used to obtain temperature images. Methane/air premixed combustion at different equivalence ratios and initial pressures were tested. Since the thermodynamics are well known, a constant volume chamber can be used as a reference device for diagnostics in high temperatures and pressures combustion. With the Rayleigh scattering technique, temperature and burning velocity can be measured simultaneously using a single-shot laser light. An additional laser Rayleigh experiment is described which yields scattering cross sections at the wavelength of 248nm. The experimental results show an excellent agreement with previous data.

Keywords:Burning velocity, Rayleigh scattering, Constant volume combustion chamber, Premixed combustion
Subjects:H Engineering > H840 Gas Engineering
H Engineering > H141 Fluid Mechanics
F Physical Sciences > F361 Laser Physics
H Engineering > H311 Thermodynamics
Divisions:College of Science > School of Engineering
ID Code:42447
Deposited On:23 Sep 2020 11:56

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