An axially stretched, cylindrical premixed flame was formed by using a radial-flow nozzle burner, which made it possible to produce a highly stretched flow field in laminar conditions and to investigate the extinction characteristics of the flame over a wide range of equivalence ratios. Using this b
A study of cylindrical premixed flames with heat loss
β Scribed by M. Kitano; H. Kobayashi; Y. Otsuka
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 898 KB
- Volume
- 76
- Category
- Article
- ISSN
- 0010-2180
No coin nor oath required. For personal study only.
β¦ Synopsis
An axially stretched cylindrical flame with heat loss to the upstream porous wall, through which a fresh mixture was assumed to percolate, was theoretically analyzed and the characteristics of the flame, which was simultaneously subjected to every effect of stretch, curvature, and heat loss, were investigated. The results were discussed in comparison with those of flames subjected to only one or two conditions. The extinction limit curve was also predicted for an outward propagating flame and was compared with the curve measured in a previous experiment, showing a qualitative agreement.
π SIMILAR VOLUMES
The ion-current fluctuation recorded with a cylindrical, electrostatic probe traversing a premixed flame has been studied. The experiments were performed by moving the probe across a rectangular or circular-nozzle burner flame; Effects of the ion-denesity distribution on the ion-current fluctuation
A previously developed theory of linear stability analysis of nonadiabatic premixed flames that was based on a diffusive thermal model is extended by eliminating the hypothesis of negligible expansion of the gas. The effects of heat losses on the limit of stability of slow burning flames propagating
Premixed flat flames of acetylene-nitrous oxide were stabilized on a perforated, water cooled burner, 3 in. in diameter. A rich flame (C2H2: 27%, N20: 73%) was stabilized at 20 mm Hg and a lean flame (C2H2: 9%, N20:91%) at 45 mm Hg. Temperature profiles and concentration profiles of free radicals an