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, Kwan-Liu 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

Other

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

ASJC Scopus subject areas

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

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    Arias, P. G., Lecoustre, V. R., Roy, S., Wang, W., Luo, Z., Haworth, D. C., Im, H. G., Lu, T. F., Ma, K-L., Sankaran, R., & Trouvé, A. (2011). Direct numerical simulation of soot formation and oxidation in temporally evolving turbulent luminous non-premixed flames. In Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2011 (pp. 542-555). Combustion Institute.