Effects of multiple scattering on radiative properties of soot fractal aggregates

The in situ optical characterization of smokes composed of soot particles relies on light extinction, angular static light scattering (SLS), or laser induced incandescence (LII). These measurements are usually interpreted by using the Rayleigh–Debye–Gans theory for Fractal Aggregates (RDG-FA). RDG-F...

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Bibliographic Details
Published in:Journal of quantitative spectroscopy & radiative transfer 2014-01, Vol.133, p.374-381
Main Authors: Yon, Jérôme, Liu, Fengshan, Bescond, Alexandre, Caumont-Prim, Chloé, Rozé, Claude, Ouf, François-Xavier, Coppalle, Alexis
Format: Article
Language:English
Subjects:
Aggregates
DDA
Engineering Sciences
Fractal analysis
Fractals
GMM
Light scattering
Mathematical analysis
Multiple scattering
RDG-FA
Scattering
Soot
Soot fractal aggregates
Wavelengths
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Summary:The in situ optical characterization of smokes composed of soot particles relies on light extinction, angular static light scattering (SLS), or laser induced incandescence (LII). These measurements are usually interpreted by using the Rayleigh–Debye–Gans theory for Fractal Aggregates (RDG-FA). RDG-FA is simple to use but it completely neglects the impact of multiple scattering (MS) within soot aggregates. In this paper, based on a scaling approach that takes into account MS effects, an extended form of the RDG-FA theory is proposed in order to take into account these effects. The parameters of this extended theory and their dependency on the number of primary sphere inside the aggregate (1
ISSN:0022-4073
1879-1352
DOI:10.1016/j.jqsrt.2013.08.022