A numerical study on effects of pressure on structure and extinction of a tubular flame was made. The adopted approach was the detailed kinetics theory combined with the exact similarity solution for the flow field. The calculation was made for stoichiometric methane-air mixture, and the structure a
An experimental study on extinction and stability of tubular flames
โ Scribed by Satoru Ishizuka
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 839 KB
- Volume
- 75
- Category
- Article
- ISSN
- 0010-2180
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โฆ Synopsis
Using a swirl-type burner, the characteristics of tubular flames in a rotating, axisymmetrical stretched flow field have been experimentally investigated for lean and rich methane/air and propane/air mixtures and for lean hydrogen/air mixtures. The tubular flame region and the corrugated flame region are mapped as functions of the fuel concentration and the tangential ejection velocity, and the variations of the flame diameter with the fuel concentration are also determined. The results qualitatively agree with the previous observation for lean mixtures and substantiate the domainant effect of the Lewis number on the characteristics of the tubular flames. A further detailed discussion has been made on the extinction characteristics of the tubular flame and the corrugation of the flame front.
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In this study we have examined the effect of a molecular-beam mass-spectrometer sampling probe on the structure of a fiat H2-O2-Ar flame doped with a small amount of HCN. Relative CN concentration and CN rotational temperature fields were obtained by laser-induced fluorescence using the R(0) through
Experimental and theoretical transient response data are presented for a tubular reactor with recycle, illustrating the distributed noture of this feedback system. The transient concentration response of an isothermal tubular reactor with recycle was studied experimentally and theoretically for inle