Unsteady combustion of a binary gasless mixture ignited by a hot wall
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Abstract
The effect of phase-transition parameters and chemical conversion kinetics on unsteady combustion of gasless systems with a melting reagent is studied. It is found that the change in the kinetic law and in the chemical reaction rate constant resulting from the emergence of the liquid phase in the system destabilizes the combustion. The mean front velocity in the self-oscillatory mode with an adiabatic burning temperature close to the melting point exceeds the front velocity in the steady-state mode. In this case, the front stability improves with an increase in the rate of heat withdrawal from the system and with a decrease in the burning temperature.
Key words
unsteady combustion phase transition kinetic functions combustion-front stabilityPreview
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REFERENCES
- 1.E. A. Nekrasov, Yu. M. Maksimov, M. Kh. Ziatdinov, and A. S. Shteinberg, “Effect of capillary spreading on combustion-wave propagation in gas-free system,” Combust. Expl. Shock Waves, 14, No.5, 575–580 (1978).Google Scholar
- 2.A. G. Merzhanov, Solid-Flame Combustion [in Russian], Inst. of Structural Macrokinetics, Russian Acad. of Sci., Chernogolovka (2000).Google Scholar
- 3.V. M. Shkiro and G. A. Nersisyan, “Structure of fluctuations occurring in the burning of tantalum-carbon mixtures,” Combust. Expl. Shock Waves, 14, No.1, 121–122 (1978).CrossRefGoogle Scholar
- 4.A. K. Filonenko, “Unsteady processes in combustion of heterogeneous systems yielding high-melting products,” in: A. G. Merzhanov (ed.), Combustion Processes in Chemical Technology and Metallurgy, United Inst. Chem. Phys., USSR Academy of Sci., Chernogolovka (1975), pp. 258–273.Google Scholar
- 5.A. A. Zenin, A. G. Merzhanov, and G. A. Nersisyan, “Thermal wave structure in SHS processes (by the example of boride synthesis),” Combust. Expl. Shock Waves, 17, No.1, 63–71 (1981).CrossRefGoogle Scholar
- 6.V. G. Prokof’ev and V. K. Smolyakov, “Unsteady combustion regimes of gasless systems with a low-melting inert component,” Combust. Expl. Shock Waves, 38, No.2, 143–147 (2002).CrossRefGoogle Scholar
- 7.A. N. Tikhonov and A. A. Samarskii, Equations of Mathematical Physics [in Russian], Nauka, Moscow (1972).Google Scholar
- 8.A. G. Merzhanov and B. I. Khaikin, Theory of Combustion Waves in Homogeneous Media [in Russian], Inst. of Structural Macrokinetics, Russian Acad. of Sci., Chernogolovka (1992).Google Scholar
- 9.A. P. Aldushin and A. G. Merzhanov, “Gasless combustion with phase transitions,” Dokl. Akad. Nauk SSSR, 236, No.5, 1133–1136 (1977).Google Scholar
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