Abstract
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.
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References
V. K. Baev “Criterial Description of Flame Geometry for a Homogeneous Mixture,” Prikl. Mekh. Tekh. Fiz. 7(4), 145–149 (1966) [J. Appl. Mech. Tech. Phys. 7 (4), 106–108 (1966)].
V. K. Baev and P. K. Tret’yakov, “Calculating the Flame Position in Turbulent Flow,” Izv. Sib. Otd. Akad. Nauk SSSR, Ser. Tekh. 1(3), 32–37 (1969).
V. K. Baev and P. K. Tret’yakov, “Criterial Description of Combustion Stability in a Turbulent Homogeneous Fuel-Oxidizer Flow,” Fiz. Goreniya Vzryva 8(1), 46–50 (1972) [Combust., Expl., Shock Waves 8 (1), 37–40 (1972)].
V. K. Baev, V. A. Konstantinovskii, I. V. Sidorov, and P. K. Tret’yakov, “Combustion Stability in Cocurrent Jets with Formation of Recirculation Zones,” in Theory and Practice of Combustion of Gas and Alternate Fuel (Nedra, Moscow, 1981) [in Russian].
V. K. Baev, P. K. Tre’tyakov, “Characteristic Times of Burning Fuel-Air Mixtures,” Fiz. Goreniya Vzryva 4(3), 367–376 (1968) [Combust., Expl., Shock Waves 4 (3), 208–214 (1968)].
V. K. Baev and V. A. Yasakov, “Stability of Diffusion Flames,” Izv. Sib. Otd. Akad. Nauk. SSSR, Ser. Tekh., No. 1, 32–38 (1969).
V. K. Baev and V. A. Yasakov, “Influence of Buoyant Forces on the Length of Diffuse Flames,” Fiz. Goreniya Vzryva 10(6), 835–840 (1974) [Combust., Expl., Shock Waves 10 (6), 752–756 (1974)].
V. K. Baev and V. A. Yasakov, “Effects of Entrainment Rate on the Geometrical Characteristics of a Diffusion Flame,” Fiz. Goreniya Vzryva 11(1), 138–142 (1975) [Combust., Expl., Shock Waves 11 (1), 121–123 (1975)].
V. K. Baev, V. A. Yasakov, “Stability of a Diffusion Flame in Single and Mixed Jets,” Fiz. Goreniya Vzryva 11(1), 163–178 (1975) [Combust., Expl., Shock Waves, 11 (1), 143–154 (1975)].
Min Yiesheng and Francoise Baillot, “Experimental Investigation of the Flame Extinction Processes of Nonpermixed Methane Flames inside an Air Coflow Diluted with CO2, N2, or Ar,” Combust. Flame 159, 3502–3517 (2012).
A. S. Ginevskii, The Theory of Turbulent Jets and Wakes (Mashinostroenie, Moscow, 1969) [in Russian].
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Original Russian Text © V.K. Baev, A.N. Bazhaikin.
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Translated from Fizika Goreniya i Vzryva, Vol. 50, No. 2, pp. 3–8, March–April, 2014.
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Baev, V.K., Bazhaikin, A.N. Refining the criterial description of flame stabilization during gas jet combustion. Combust Explos Shock Waves 50, 125–129 (2014). https://doi.org/10.1134/S0010508214020014
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DOI: https://doi.org/10.1134/S0010508214020014