Modeling soot oxidation and fragmentation in laminar premixed flames

M. E. Mueller, G. Blanquart, H. Pitsch

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

Abstract

While the formation and growth of soot particles has received much attention, the subsequent destruction of the particles is less well understood. Soot particles are destroyed through two parallel processes: oxidation and fragmentation. Oxidation is the removal of mass from particles due to chemical reactions with molecular oxygen and hydroxyl radicals. Fragmentation is the break-up of large aggregates into smaller aggregates. Models for both oxidation and fragmentation are presented. To statistically describe the population, the two models are implemented in both Monte Carlo (MC) simulations and the Hybrid Method of Moments (HMOM). In the implementations, particles are described with Volume and Surface area (VS) to account for the presence of fractal aggregates. The models are validated in a set of laminar premixed methane flames and allow the simultaneous prediction of total soot mass, total soot number density, and average particle size. Additional models needed for unclosed terms in HMOM are also developed and discussed.

Original languageEnglish (US)
Title of host publicationFall Technical Meeting of the Western States Section of the Combustion Institute 2009, WSS/CI 2009 Fall Meeting
PublisherWestern States Section/Combustion Institute
Pages647-661
Number of pages15
ISBN (Electronic)9781615676507
StatePublished - Jan 1 2009
Externally publishedYes
EventFall Technical Meeting of the Western States Section of the Combustion Institute 2009, WSS/CI 2009 - Irvine, United States
Duration: Oct 26 2009Oct 27 2009

Publication series

NameFall Technical Meeting of the Western States Section of the Combustion Institute 2009, WSS/CI 2009 Fall Meeting
Volume2

Other

OtherFall Technical Meeting of the Western States Section of the Combustion Institute 2009, WSS/CI 2009
CountryUnited States
CityIrvine
Period10/26/0910/27/09

All Science Journal Classification (ASJC) codes

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

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  • Cite this

    Mueller, M. E., Blanquart, G., & Pitsch, H. (2009). Modeling soot oxidation and fragmentation in laminar premixed flames. In Fall Technical Meeting of the Western States Section of the Combustion Institute 2009, WSS/CI 2009 Fall Meeting (pp. 647-661). (Fall Technical Meeting of the Western States Section of the Combustion Institute 2009, WSS/CI 2009 Fall Meeting; Vol. 2). Western States Section/Combustion Institute.