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TECHNICAL NOTES

Clouds Over Soot Evaporation: Errors in Modeling Laser-Induced Incandescence of Soot

[+] Author and Article Information
G. J. Smallwood, D. R. Snelling, F. Liu, Ö. L. Gülder

Combustion Research Group, Institute for Chemical Process & Environmental Technology, National Research Council Canada, 1200 Montreal Road, Ottawa, Ontario, Canada K1A 0R6

J. Heat Transfer 123(4), 814-818 (Apr 03, 2000) (5 pages) doi:10.1115/1.1370507 History: Received April 03, 2000; Received December 07, 2000
Copyright © 2001 by ASME
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References

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Will,  S., Schraml,  S., Bader,  K., and Leipertz,  A., 1998, “Performance Characteristics of Soot Primary Particle Size Measurements by Time-Resolved Laser-Induced Incandescence,” Appl. Opt., 37, pp. 5647–5658.
Snelling, D. R., Liu, F., Smallwood, G. J., and Gülder, Ö. L., 2000, “Evaluation of the Nanoscale Heat and Mass Transfer Model of the Laser-Induced Incandescence: Prediction of the Excitation Intensity,” Thirty Fourth National Heat Transfer Conference, NHTC2000-12132.
Schraml,  S., Dankers,  S., Bader,  K., Will,  S., and Leipertz,  A., 2000, “Soot Temperature Measurements and Implications for Time-Resolved Laser-Induced Incandescence (Tire-LII),” Combust. Flame, 120, pp. 439–450.
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Lee, S. C., and Tien, C. L., 1981, “Optical Constants of Soot in Hydrocarbon Flames,” Eighteenth Symposium (International) on Combustion, The Combustion Institute, pp. 1159–1166.
Chase, M. W., Jr., Davies, C. A., Downey, J. R., Jr., Frurip, D. J., McDonald, R. A., and Syverud, A. N., 1985, “JANAF Thermochemical Tables,” Third Edition, Journal of Physical and Chemical Reference Data, 14 , Suppl. 1.
Ni,  T., Pinson,  J. A., Gupta,  S., and Santoro,  R. J., 1995, “Two-Dimensional Imaging of Soot Volume Fraction by the Use of Laser-Induced Incandescence,” Appl. Opt., 34, pp. 7083–7091.

Figures

Grahic Jump Location
Uncertainty analysis for specified thermal properties of soot: (a) refractive index dependent function; (b) mean molecular weight of soot vapor; (c) heat of vaporization; and (d) vapor pressure.
Grahic Jump Location
Effects of some evaporation model parameters and the thermal conductivity on the predicted soot particle size (a) and temperature (b). The temporal profile of the laser intensity is shown for reference.
Grahic Jump Location
Variation of the predicted and the experimental normalized prompt LII signals with laser fluence

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