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 language | English (US) |
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Title of host publication | Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2011 |
Publisher | Combustion Institute |
Pages | 542-555 |
Number of pages | 14 |
ISBN (Electronic) | 9781622761258 |
State | Published - Jan 1 2011 |
Event | Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2011 - Storrs, United States Duration: Oct 9 2011 → Oct 12 2011 |
Other
Other | Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2011 |
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Country | United States |
City | Storrs |
Period | 10/9/11 → 10/12/11 |
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Mechanical Engineering
- Chemical Engineering(all)