Effect of the Phase Transition on Three-Dimensional Unstable Regimes of Gasless Combustion
V. G. Prokof'ev1, V. K. Smolyakov1,2
1Tomsk State University, Tomsk, 634050 Russia
2Department of Structural Macrokinetics, Tomsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Tomsk, 634021 Russia
Keywords: безгазовое горение, спиновый режим, фазовый переход, gasless combustion, spin mode, phase transition
Abstract
The thermal effect of the phase transition on unstable regimes of gasless combustion is numerically studied within the framework of the model of solid flame combustion of a cylindrical sample. The closer the phase transition temperature to the burning temperature, the more pronounced the effect of the phase transition on the combustion character. In this case, the combustion front surface is noticeably smoothed owing to reduction of temperature gradient values. A relationship between the change in the combustion modes considered in the study and the change in the phase transition parameters is found. An unsteady periodic symmetric mode of combustion with ring-shaped trajectories of motion of combustion sites over the side surface is obtained.
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