Premixed flame propagating into a narrow channel at a high speed, part 2: Transient behavior of the properties of the flowing gas inside the channel
✍ Scribed by Norimasa Iida; Osamu Kawaguchi; G.Takeshi Sato
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 766 KB
- Volume
- 60
- Category
- Article
- ISSN
- 0010-2180
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✦ Synopsis
The behavior of a premixed flame propagating from a chamber into a narrow channel at a high speed was examined using high speed and instantaneous schlieren photography, ion current measurement with electrostatic probes, and temperature measurement with an optical method. From detailed measurements of flames passing through the channel, flame extinguishment in the channel, no matter whether transient or not, was found to occur due to quenching of the reacting gas by rapid turbulent mixing with cold fresh mixture at the downstream of the contraction region and by heat transfer to the cold channel walls. Extinguishment must occur when these heat losses exceed the heat released by the chemical reaction of the flowing mixture.