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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
physics and astronomy
Modeling laser-induced incandescence of soot: A summary and comparison of LII models
Applied Physics B: Lasers and Optics, Volume 87, No. 3, Year 2007
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Description
We have performed a comparison of ten models that predict the temporal behavior of laser-induced incandescence (LII) of soot. In this paper we present a summary of the models and comparisons of calculated temperatures, diameters, signals, and energy-balance terms. The models were run assuming laser heating at 532 nm at fluences of 0.05 and 0.70 J/cm2 with a laser temporal profile provided. Calculations were performed for a single primary particle with a diameter of 30 nm at an ambient temperature of 1800 K and a pressure of 1 bar. Preliminary calculations were performed with a fully constrained model. The comparison of unconstrained models demonstrates a wide spread in calculated LII signals. Many of the differences can be attributed to the values of a few important parameters, such as the refractive-index function E(m) and thermal and mass accommodation coefficients. Constraining these parameters brings most of the models into much better agreement with each other, particularly for the low-fluence case. Agreement among models is not as good for the high-fluence case, even when selected parameters are constrained. The reason for greater variability in model results at high fluence appears to be related to solution approaches to mass and heat loss by sublimation. © Springer-Verlag 2007.
Authors & Co-Authors
Michelsen, H. A.
United States, Livermore
Sandia National Laboratories, California
Liu, F.
Canada, Ottawa
National Research Council Canada
Kock, B. F.
Germany, Duisburg
Universität Duisburg-essen
Bladh, H.
Sweden, Lund
Lunds Tekniska Högskola
Boiarciuc, A.
France, Orleans
Université D'orléans
Charwath, M.
Germany, Karlsruhe
Karlsruher Institut Für Technologie, Campus Süd
Dreier, T.
Switzerland, Villigen
Paul Scherrer Institut
Hadef, Redjem
Algeria, Oum el Bouaghi
Université Oum el Bouaghi
Hofmann, M.
Germany, Duisburg
Universität Duisburg-essen
Reimann, J.
Germany, Bremen
Universität Bremen
Will, S.
Germany, Bremen
Universität Bremen
Bengtsson, P. E.
Sweden, Lund
Lunds Tekniska Högskola
Bockhorn, H.
Germany, Karlsruhe
Karlsruher Institut Für Technologie, Campus Süd
Foucher, F.
France, Orleans
Université D'orléans
Geigle, Klaus Peter
Germany, Koln
Deutsches Zentrum Für Luft- Und Raumfahrt Dlr
Mounaïm-Rousselle, C.
France, Orleans
Université D'orléans
Schulz, C.
Germany, Duisburg
Universität Duisburg-essen
Stirn, R.
Germany, Koln
Deutsches Zentrum Für Luft- Und Raumfahrt Dlr
Tribalet, B.
Germany, Duisburg
Universität Duisburg-essen
Suntz, R.
Germany, Karlsruhe
Karlsruher Institut Für Technologie, Campus Süd
Statistics
Citations: 182
Authors: 20
Affiliations: 10
Identifiers
Doi:
10.1007/s00340-007-2619-5
ISSN:
09462171