Direct numerical simulation of soot formation and oxidation in temporally evolving turbulent luminous non-premixed flames

P. G. Arias, V. R. Lecoustre, S. Roy, W. Wang, Z. Luo, D. C. Haworth, H. G. Im, T. F. Lu, K. L. Ma, R. Sankaran, A. Trouvé

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Direct numerical simulations of a two-dimensional temporally-evolving ethylene-air non-premixed flame in a decaying turbulent flow are performed using a high-order compressible Navier-Stokes solver called S3D. Different models for fuel oxidation and soot formation/oxidation are presented and compared. The first model comprises a single step ethylene-air chemical mechanism with a semi-empirical soot model. Equidiffusion of species is assumed. The second model comprises a reduced mechanism derived from a detailed ethylene-air chemical kinetic mechanism that includes the reaction pathways for the formation of polycyclic aromatic hydrocarbons. The gas-phase chemistry is coupled with a semi-empirical soot model. The third model comprises the same reduced mechanism coupled with a detailed soot model based on the method of moments with interpolative closure. Differential diffusion of species is modeled. This paper presents a preliminary comparison of the models in the case of temporally evolving turbulent diffusion flames, with a particular focus on soot formation.

Original languageEnglish (US)
Title of host publicationFall Technical Meeting of the Eastern States Section of the Combustion Institute 2011
PublisherCombustion Institute
Pages542-555
Number of pages14
ISBN (Electronic)9781622761258
StatePublished - Jan 1 2011
EventFall Technical Meeting of the Eastern States Section of the Combustion Institute 2011 - Storrs, United States
Duration: Oct 9 2011Oct 12 2011

Publication series

NameFall Technical Meeting of the Eastern States Section of the Combustion Institute 2011

Other

OtherFall Technical Meeting of the Eastern States Section of the Combustion Institute 2011
CountryUnited States
CityStorrs
Period10/9/1110/12/11

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Mechanical Engineering
  • Chemical Engineering(all)

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