Abstract
A theoretical analysis of the ignition of a liquid fuel vapor-air mixture by a moving small source of heating was performed. A gas-phase model of the ignition with consideration given to heat transfer, liquid fuel evaporation, diffusion and convective motion of fuel vapor in the oxidizer medium, crystallization of the heating source, kinetics of the vaporization and ignition processes, temperature dependence of the thermophysical characteristics of the interacting substances, and character of motion of the heating source in the vapor-gas mixture was developed. The values of the ignition delay time τ d , the main characteristic of the process, were determined. It was established how τ d depends on the initial temperature, heating source sizes, velocity and trajectory of the heating source, and ambient air temperature.
Similar content being viewed by others
References
V. I. Blinov and G. N. Khudyakov, Diffusional Combustion of Liquids (Akad. Nauk SSSR, Moscow, 1961) [in Russian].
R. P. Fitzheral’d and M. V. Bryuster, Fiz. Goreniya Vzryva 42(1), 3 (2006) [Combust. Explos., Shock Waves 42, 1 (2006)].
M. V. Beksted, Fiz. Goreniya Vzryva 42(6), 4 (2006) [Combust. Explos., Shock Waves 42, 623 (2006)].
B. V. Novozhilov, Fiz. Goreniya Vzryva 43(4), 66 (2007) [Combust. Explos., Shock Waves 43, 429 (2007)].
V. N. Vilyunov, Theory of Ignition of Condensed Materials (Nauka Sib. Otd., Novosibirsk, 1984) [in Russian].
I. G. Namyatov, S. S. Minaev, V. S. Babkin, V. A. Bunev, and A. A. Korzhavin, Fiz. Goreniya Vzryva 36(5), 12 (2000) [Combust. Explos., Shock Waves 36, 562 (2000)].
G. V. Kuznetsov and P. A. Strizhak, Pozharovzryvobezopasnost’, No. 3, 26 (2008).
G. V. Kuznetsov, G. Ya. Mamontov, and G. V. Taratushkina, Khim. Fiz., No. 3, 67 (2004).
P. J. Roache, Computational Fluid Dynamics (Hermosa Publ. Albuquerque, London, 1976; Mir, Moscow, 1980).
Yo Jaluria, Natural Convection: Heat and Mass Transfer (Pergamon, Oxford, 1980; Mir, Moscow, 1983).
V. M. Paskonov, Numerical Simulation of Heat and Mass Transfer Processes, Ed. by V. M. Paskonov, V. I. Polezhaev, and L. A. Chudov (Nauka, Moscow, 1984) [in Russian].
D. A. Frank-Kamenetskii, Diffusion and Heat Transfer in Chemical Kinetics (Nauka, Moscow, 1987) [in Russian].
A. A. Samarskii, The Theory of Difference Schemes (Nauka, Moscow, 1983) [in Russian].
L. A. Kozdoba, Methods of Solution of Nonlinear Heat Conduction Problems (Nauka, Moscow, 1975) [in Russian].
G. V. Kuznetsov and P. A. Strizhak, Izv. Tomsk. Politekh. Un-ta, No. 4, 5 (2008).
N. B. Vargaftik, Handbook of Thermophysical Properties of Gases and Liquids (Stars, Moscow, 2006) [in Russian].
V. N. Yurenev and P. D. Lebedev, Thermotechnical Manual (Energiya, Moscow, 1975), Vol. 1 [in Russian].
V. N. Yurenev and P. D. Lebedev, Thermotechnical Manual (Energiya, Moscow, 1975), Vol. 2 [in Russian].
A. Ya. Korol’chenko, Fire and Explosion Hazard Properties of Substances and Materials and Relevant Fire-Fighting Facilities (Pozhnauka, Moscow, 2004), Vol. 1 [in Russian].
E. S. Shchetinkov, Physics of Gas Combustion (Nauka, Moscow, 1965) [in Russian].
V. N. Vilyunov, Fiz. Goreniya Vzryva, No. 4, 513 (1968).
K. V. Dobrego and S. A. Zhdanok, Fiz. Goreniya Vzryva, No. 1, 15 (1990).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © G.V. Kuznetsov, P.A. Strizhak, 2010, published in Khimicheskaya Fizika, 2010, Vol. 29, No. 2, pp. 29–37.
Rights and permissions
About this article
Cite this article
Kuznetsov, G.V., Strizhak, P.A. Ignition of a vapor-gas mixture by a moving small-size source. Russ. J. Phys. Chem. B 4, 93–100 (2010). https://doi.org/10.1134/S199079311001015X
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S199079311001015X