DME/Oxygen wall-stabilized premixed cool flame

Minhyeok Lee, Yong Fan, Christopher B. Reuter, Yiguang Ju, Yuji Suzuki

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

Wall-stabilized cool flames have been studied through numerical analysis and a series of experiments. One- and two-dimensional numerical simulations were performed to estimate the characteristics of the wall-stabilized cool flames, such as flammability and temperature/species distributions. Based on the computational results, the ignition condition of the cool flame at a fixed wall temperature has been identified with the strain rate between the van't Hoff point and the cool flame extinction point. In experiments with an impinging jet burner and a heated plate, the spontaneous ignition of the cool flame on the heated wall has been successfully established under the conditions predicted by the present numerical simulations. Spatial distributions of the HCHO concentration and flame temperature were measured through formaldehyde Planar Laser-Induced Fluorescence (HCHO-PLIF) and thermocouple measurements, respectively. It is found that the measurement data show a reasonable accordance with the simulation results with reduced low-temperature reactivity.

Original languageEnglish (US)
Pages (from-to)1749-1756
Number of pages8
JournalProceedings of the Combustion Institute
Volume37
Issue number2
DOIs
StatePublished - Jan 1 2019

All Science Journal Classification (ASJC) codes

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

Keywords

  • HCHO-PLIF
  • Ignition
  • Low-temperature reactivity
  • Premixed flame
  • Wall-stabilized cool flame

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