The flame preheating effect on numerical modelling of soot formation in a two-dimensional laminar ethylene-air diffusion flame

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DOIResolve DOI: http://doi.org/10.1088/1364-7830/6/2/301
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TypeArticle
Journal titleCombustion Theory and Modelling
ISSN1364-7830
Volume6
IssueJune 2
Pages173187; # of pages: 15
Subjectsoot formation; diffusion flame; combustion; Heat Transfer; Mathematical Modeling; Thermodynamics and Kinetic Theory; coflow diffusion ethylene-air flame; thermal property; transport property; soot volume
AbstractNumerical modelling of soot formation is conducted for an axisymmetric, laminar, coflow diffusion ethylene–air flame by two different methods to investigate the effect of flame preheating. The first method cannot account for the preheating effect, while the second one can. A detailed gas-phase reaction mechanism and complex thermal and transport properties are used. The fully coupled elliptic equations are solved. A simple two-equation soot model is used to model the soot process coupled with detailed gas-phase chemistry. The numerical results are compared with experimental data and indicate that the flame preheating effect has a significant influence on the prediction of soot yields. Both methods give reasonable flame temperature and soot volume fraction distributions. However, quantitatively the second method results in improved flame temperatures and soot volume fractions, especially in the region near the fuel inlet, although the maximum flame temperatures from both methods are slightly lower than that from the experiment.
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Copyright noticeMaterial in this document is covered by the provisions of the Copyright Act, by Canadian laws, policies, regulations and international agreements. Such provisions serve to identify the information source and, in specific instances, to prohibit reproduction of materials without written permission.
LanguageEnglish
AffiliationNRC Institute for Chemical Process and Environmental Technology (ICPET-ITPCE); National Research Council Canada
Access conditionavailable
unlimited
public
Peer reviewedYes
Identifier16883354
NRC number51477
NPARC number4213018
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Record identifier5df9c987-f3d0-4a61-83cf-2c02127ff09a
Record created2009-10-02
Record modified2016-05-09
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