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Thermal radiative coefficients of cylindrically and spherically shaped soot particles and soot agglomerates

Nilsson, Thomas LU and Sundén, Bengt LU (2004) In Heat and Mass Transfer 41(1). p.12-22
Abstract
Simple and computer attractive models for calculating radiation properties are still needed. This paper gives correlations for the Planck and Rosseland means of the extinction and scattering coefficients for both cylindrically and spherically shaped soot particles. The means are valid for temperatures between 400 and 2400 K and particle radii between 0.001 and 0.5 mum. The errors of these means are less than 1%. The Planck mean asymmetry ( g) factors for cylindrically and spherically shaped soot particles are also given in order to be able to calculate their effective ( transport) properties. The RDG-PFA (Rayleigh-Debye-Gans polydisperse fractal aggregates) theory has been used for creating the correlations of the effective Planck and... (More)
Simple and computer attractive models for calculating radiation properties are still needed. This paper gives correlations for the Planck and Rosseland means of the extinction and scattering coefficients for both cylindrically and spherically shaped soot particles. The means are valid for temperatures between 400 and 2400 K and particle radii between 0.001 and 0.5 mum. The errors of these means are less than 1%. The Planck mean asymmetry ( g) factors for cylindrically and spherically shaped soot particles are also given in order to be able to calculate their effective ( transport) properties. The RDG-PFA (Rayleigh-Debye-Gans polydisperse fractal aggregates) theory has been used for creating the correlations of the effective Planck and Rosseland means of the extinction and scattering coefficients of the soot agglomerates. The means of the agglomerates are valid for temperatures between 400 and 2400 K and primary particle diameters between 0.01 and 0.07 mum. The extinction coefficient of the agglomerated soot lies between that of spherical and cylindrical soot particles. A 3D test case, using the discrete ordinates method of order 8 (DOM S8), shows that the scattering of the agglomerates is of very little importance, as it comes to the temperatures and wall heat fluxes. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Heat and Mass Transfer
volume
41
issue
1
pages
12 - 22
publisher
Springer
external identifiers
  • wos:000225229300003
  • scopus:10844243139
ISSN
1432-1181
DOI
10.1007/s00231-004-0519-3
language
English
LU publication?
yes
id
433b5b52-59d3-4b94-a5c5-b7f0b02801c7 (old id 260961)
date added to LUP
2007-10-29 09:43:16
date last changed
2017-10-08 03:32:20
@article{433b5b52-59d3-4b94-a5c5-b7f0b02801c7,
  abstract     = {Simple and computer attractive models for calculating radiation properties are still needed. This paper gives correlations for the Planck and Rosseland means of the extinction and scattering coefficients for both cylindrically and spherically shaped soot particles. The means are valid for temperatures between 400 and 2400 K and particle radii between 0.001 and 0.5 mum. The errors of these means are less than 1%. The Planck mean asymmetry ( g) factors for cylindrically and spherically shaped soot particles are also given in order to be able to calculate their effective ( transport) properties. The RDG-PFA (Rayleigh-Debye-Gans polydisperse fractal aggregates) theory has been used for creating the correlations of the effective Planck and Rosseland means of the extinction and scattering coefficients of the soot agglomerates. The means of the agglomerates are valid for temperatures between 400 and 2400 K and primary particle diameters between 0.01 and 0.07 mum. The extinction coefficient of the agglomerated soot lies between that of spherical and cylindrical soot particles. A 3D test case, using the discrete ordinates method of order 8 (DOM S8), shows that the scattering of the agglomerates is of very little importance, as it comes to the temperatures and wall heat fluxes.},
  author       = {Nilsson, Thomas and Sundén, Bengt},
  issn         = {1432-1181},
  language     = {eng},
  number       = {1},
  pages        = {12--22},
  publisher    = {Springer},
  series       = {Heat and Mass Transfer},
  title        = {Thermal radiative coefficients of cylindrically and spherically shaped soot particles and soot agglomerates},
  url          = {http://dx.doi.org/10.1007/s00231-004-0519-3},
  volume       = {41},
  year         = {2004},
}