Planar 2-color time-resolved laser-induced incandescence measurements of soot in a diffusion flame

• Published in: Aerosol science and technology Vol. 51; no. 12; pp. 1345 - 1353
• Main Authors: Tian, B., Zhang, C., Gao, Y., Hochgreb, S.
• Format: Journal Article
• Language: English
• Published: New York Taylor & Francis 02-12-2017; Taylor & Francis Ltd
• Subjects: Aerosol research; Cameras; Color; Diffusion; Energy balance; Energy consumption; Laser induced incandescence; Lasers; Particle size distribution; Sauter mean diameter; Soot; Soot particles; Thomas Kirchstetter; Vehicle emissions
• ISSN: 0278-6826; 1521-7388
• DOI: 10.1080/02786826.2017.1366644

Planar two-dimensional two-color time-resolved laser-induced incandescence (2D-2C-TiRe-LII) is employed to investigate soot formation in a standard ethylene laminar diffusion flame. The time resolution of the 2D LII signal is realized by shifting the delay time of ICCD cameras. The two-color configuration is applied to measure the peak temperature
of soot particles immediately after the laser pulse rather than using the energy balance to compute
. The Sauter mean diameter D
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and the corresponding distribution width parameter σ of the measured soot particles is extracted by using an error minimization method. The method shows that a range of possible geometry mean particle diameters and corresponding distribution width parameters are also possible solutions, and further information on realizable particle size distribution widths is necessary to narrow down the extracted diameter.
Copyright © 2017 American Association for Aerosol Research