Refining the criterial description of flame stabilization during gas jet combustion

Analytical dependence for the diffusion flame lift-off length with fuel jet discharge into the atmosphere is obtained in criterial form. The dependence can be used to determine the limiting parameters at which blow-off occurs and describe the lift-off length variation under pre-blow-off conditions,...

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Veröffentlicht in:Combustion, explosion, and shock waves explosion, and shock waves, 2014-03, Vol.50 (2), p.125-129
Hauptverfasser: Baev, V. K., Bazhaikin, A. N.
Format: Artikel
Sprache:eng
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Zusammenfassung:Analytical dependence for the diffusion flame lift-off length with fuel jet discharge into the atmosphere is obtained in criterial form. The dependence can be used to determine the limiting parameters at which blow-off occurs and describe the lift-off length variation under pre-blow-off conditions, and it correlates well with earlier generalizations of experimental data. The experiments on the combustion of propane-butane and natural gas confirm the correctness of the proposed form of the analytical generalization, show the marked influence of the external shape of the gas nozzle on the lift-off parameters, and indicate that the blow-off of the turbulent diffusion flame is slower than the characteristic combustion time.
ISSN:0010-5082
1573-8345
DOI:10.1134/S0010508214020014