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Accurate method for predicting light scattering from soot aggregates with subparticles of arbitrary shape and structure

Karlsson, Anders LU ; Bladh, Henrik LU and Bengtsson, Per-Erik LU (2009) In Journal of the Optical Society of America A 26(7). p.1704-1713
Abstract
Soot particles can be formed in hydrocarbon flames as a result of an inefficient combustion process. The particles are near-spherical, and at later stages in the soot growth process, they form chainlike sparse aggregates. When applying optical diagnostic methods, this aggregation influences the evaluation of soot properties based on assumptions of isolated particles. In this paper an efficient and accurate method for calculating scattering of light from these structures is presented. The method can handle aggregates with several hundred subparticles with no restrictions on shape, internal structure, or coagulation of the subparticles. The basic idea is that the induced dipole moments of the subparticles are determined from the solution of... (More)
Soot particles can be formed in hydrocarbon flames as a result of an inefficient combustion process. The particles are near-spherical, and at later stages in the soot growth process, they form chainlike sparse aggregates. When applying optical diagnostic methods, this aggregation influences the evaluation of soot properties based on assumptions of isolated particles. In this paper an efficient and accurate method for calculating scattering of light from these structures is presented. The method can handle aggregates with several hundred subparticles with no restrictions on shape, internal structure, or coagulation of the subparticles. The basic idea is that the induced dipole moments of the subparticles are determined from the solution of a quasi-static problem that can be solved with high accuracy by, e.g., the finite element method. (C) 2009 Optical Society of America (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of the Optical Society of America A
volume
26
issue
7
pages
1704 - 1713
publisher
Optical Society of America
external identifiers
  • wos:000268471500022
  • scopus:67849086940
ISSN
1084-7529
DOI
10.1364/JOSAA.26.001704
language
English
LU publication?
yes
id
fb22b84a-1320-4d10-8597-13afb35d2f99 (old id 1460505)
date added to LUP
2009-08-17 16:09:08
date last changed
2017-01-01 06:15:10
@article{fb22b84a-1320-4d10-8597-13afb35d2f99,
  abstract     = {Soot particles can be formed in hydrocarbon flames as a result of an inefficient combustion process. The particles are near-spherical, and at later stages in the soot growth process, they form chainlike sparse aggregates. When applying optical diagnostic methods, this aggregation influences the evaluation of soot properties based on assumptions of isolated particles. In this paper an efficient and accurate method for calculating scattering of light from these structures is presented. The method can handle aggregates with several hundred subparticles with no restrictions on shape, internal structure, or coagulation of the subparticles. The basic idea is that the induced dipole moments of the subparticles are determined from the solution of a quasi-static problem that can be solved with high accuracy by, e.g., the finite element method. (C) 2009 Optical Society of America},
  author       = {Karlsson, Anders and Bladh, Henrik and Bengtsson, Per-Erik},
  issn         = {1084-7529},
  language     = {eng},
  number       = {7},
  pages        = {1704--1713},
  publisher    = {Optical Society of America},
  series       = {Journal of the Optical Society of America A},
  title        = {Accurate method for predicting light scattering from soot aggregates with subparticles of arbitrary shape and structure},
  url          = {http://dx.doi.org/10.1364/JOSAA.26.001704},
  volume       = {26},
  year         = {2009},
}