Convective Combustion of a Ti + 0.5C Granulated Mixture. Domain of Existence and Fundamental Phenomena
B. S. Seplyarskii, R. A. Kochetkov, T. G. Lisina
Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, 142432 Russia
Keywords: горение, гранулирование, смесь Ti + 0.5C, поток газа, конвективный теплоперенос, механизм горения, переход между режимами горения, combustion, granulation, Ti + 0.5C mixture, gas flow, convective heat transfer, combustion mechanism, transition between combustion regimes
Abstract
Combustion of a Ti + 0.5C granulated mixture with a varying rate of the concurrent flow of nitrogen is under consideration. Experimental data are used to determine the gas flow parameters responsible for the transition from conductive to convective propagation of the combustion wave, which is characterized by a stronger dependence of the burning rate on the value of the gas flow. A simple model for calculating the burning rate in convective combustion, and a method for determining the boundary between combustion regimes is developed. In accordance with this model, the burning rate not only depends on the combustion temperature of the mixture, but also on the ignition temperature of the mixture components in the flow of active gas.
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