Experimental Studies on the Turbulent Burning Velocities of Premixed Mixtures in a Closed Bomb (Influences of Oxygen Concentration and Ignition Energy)

Hiroyuki Kido, Yutaro Wakuri, Kenshiro NakaShima, Rui Bin Cai, Takashi Iwanaga, Toshiaki Kitagawa

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

In order to clarify the influences of oxygen concentration and ignition energy on turbulent burning velocity, experiments on turbulent burning velocity have been carried out in a closed bomb using premixed mixtures. In the first series of experiments, only the oxygen concentration has been varied, keeping the other parameters, such as laminar burning velocity, laminar flame thickness, turbulence intensity, and mean spatial scale, constant. As to the hydrogen and methane mixtures, larger turbulent burning velocities were obtained for mixtures with higher oxygen concentration. But for propane mixtures, the above tendency was inversed. In the next series of experiments, turbulent burning velocities have been measured for comparatively large and small ignition energies, keeping the other parameters, including the oxygen concentration, constant. As a result, the upper limit of turbulence intensity at which flames can propagate without extinction has apparently increased with a rise in ignition energy.

Original languageEnglish
Pages (from-to)3084-3090
Number of pages7
JournalTransactions of the Japan Society of Mechanical Engineers Series B
Volume52
Issue number480
DOIs
Publication statusPublished - 1986
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering

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