Non-premixed ignition, laminar flame propagation, and mechanism reduction of n-butanol, iso-butanol, and methyl butanoate

Wei Liu, Andrew P. Kelley, Chung K. Law

Research output: Contribution to journalArticle

92 Scopus citations

Abstract

The non-premixed ignition temperature of n-butanol (CH3CH 2CH2CH2OH), iso-butanol ((CH3) 2CHCH2OH) and methyl butanoate (CH3CH 2CH2COOCH3) was measured in a liquid pool assembly by heated oxidizer in a stagnation flow for system pressures of 1 and 3 atm. In addition, the stretch-corrected laminar flame speeds of mixtures of air-n-butanol/iso-butanol/methyl butanoate were determined from the outwardly propagating spherical flame at initial pressures of up to 2 atm, for an extensive range of equivalence ratio. The ignition temperature and laminar flame speeds of n-butanol and methyl butanoate were computationally simulated with three recently developed kinetic mechanisms in the literature. Dominant reaction pathways to ignition and flame propagation were identified and discussed through a chemical explosive mode analysis (CEMA) and sensitivity analysis. The detailed models were further reduced through a series of systematic strategies. The reduced mechanisms provided excellent agreement in both homogeneous and diffusive combustion environments and greatly improved the computation efficiency.

Original languageEnglish (US)
Pages (from-to)995-1002
Number of pages8
JournalProceedings of the Combustion Institute
Volume33
Issue number1
DOIs
StatePublished - Jan 10 2011

All Science Journal Classification (ASJC) codes

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

Keywords

  • Butanol
  • Laminar flame speeds
  • Mechanism reduction
  • Methyl butanoate
  • Stagnation-flow ignition

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