Extinction of low-stretched diffusion flame in microgravity

Kaoru Maruta, Masaharu Yoshida, Hongsheng Guo, Yiguang Ju, Takashi Niioka

Research output: Contribution to journalArticle

92 Citations (Scopus)

Abstract

Extinction of counterflow diffusion flames of air and methane diluted with nitrogen is studied by drop tower experiments and numerical calculation using detailed chemistry and transport properties. Radiative heat loss from the flame zone is taken into consideration. Experimental results identified two kinds of extinction at the same fuel concentration, that is, in addition to the widely known stretch extinction, another type of extinction is observed when the stretch rate is sufficiently low. Consequently, plots of stretch rates versus fuel concentration limits exhibit a 'C-shaped' extinction curve. Numerical calculation including radiative heat loss from the flame zone qualitatively agreed with the experimental results and indicated that the mechanism of counterflow diffusion flame extinction at low stretch rates was radiative heat loss.

Original languageEnglish (US)
Pages (from-to)181-187
Number of pages7
JournalCombustion and Flame
Volume112
Issue number1-2
DOIs
StatePublished - Jan 1 1998
Externally publishedYes

Fingerprint

diffusion flames
Microgravity
microgravity
Heat losses
extinction
counterflow
Methane
heat
Transport properties
Towers
flames
Nitrogen
drop towers
Air
methane
transport properties
plots
Experiments
chemistry
nitrogen

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Physics and Astronomy(all)
  • Chemical Engineering(all)
  • Chemistry(all)
  • Fuel Technology

Cite this

Maruta, Kaoru ; Yoshida, Masaharu ; Guo, Hongsheng ; Ju, Yiguang ; Niioka, Takashi. / Extinction of low-stretched diffusion flame in microgravity. In: Combustion and Flame. 1998 ; Vol. 112, No. 1-2. pp. 181-187.
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Extinction of low-stretched diffusion flame in microgravity. / Maruta, Kaoru; Yoshida, Masaharu; Guo, Hongsheng; Ju, Yiguang; Niioka, Takashi.

In: Combustion and Flame, Vol. 112, No. 1-2, 01.01.1998, p. 181-187.

Research output: Contribution to journalArticle

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AU - Maruta, Kaoru

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