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Modeling laser-indu...
Modeling laser-induced incandescence of soot: a summary and comparison of LII models
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Michelsen, H. A. (author)
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Liu, F. (author)
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Kock, B. F. (author)
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- Bladh, Henrik (author)
- Lund University,Lunds universitet,Förbränningsfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Combustion Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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Boiarciuc, A. (author)
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Charwath, M. (author)
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Dreier, T. (author)
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Hadef, R. (author)
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Hofmann, M. (author)
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Reimann, J. (author)
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Will, S. (author)
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- Bengtsson, Per-Erik (author)
- Lund University,Lunds universitet,Förbränningsfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Combustion Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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Bockhorn, H. (author)
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Foucher, F. (author)
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Geigle, K.-P. (author)
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Mounaim-Rousselle, C. (author)
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Schulz, C. (author)
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Stirn, R. (author)
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Tribalet, B. (author)
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Suntz, R. (author)
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(creator_code:org_t)
- 2007-04-25
- 2007
- English.
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In: Applied Physics B. - : Springer Science and Business Media LLC. - 0946-2171 .- 1432-0649. ; 87:3, s. 503-521
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Abstract
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- 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/cm(2) 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.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Michelsen, H. A.
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Liu, F.
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Kock, B. F.
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Bladh, Henrik
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Boiarciuc, A.
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Charwath, M.
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show more...
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Dreier, T.
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Hadef, R.
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Hofmann, M.
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Reimann, J.
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Will, S.
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Bengtsson, Per-E ...
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Bockhorn, H.
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Foucher, F.
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Geigle, K.-P.
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Mounaim-Roussell ...
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Schulz, C.
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Stirn, R.
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Tribalet, B.
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Suntz, R.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
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Applied Physics ...
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Lund University