Frontal transformation modes of structured energetic heterogeneous systems

The transformation of structured energetic heterogeneous systems is studied taking into account radiative heat transfer. It is shown that at the combustion front of porous heterogeneous media, radiative heat transfer has a significant effect on the structure of the front and the dynamics of its propagation. In the case of a nonlinear dependence of heat transfer on temperature, the reaction zone is concentrated in a narrow temperature range in the region of high temperatures. The dimensions of the reaction zone coincide with the width of the heating zone. In the case of dominant radiative heat transfer in multilayer systems, there may be quasihomogeneous or relay-race dynamics behavior of combustion-wave propagation, depending on the scale of heterogeneity. Oscillations in the displacement of the high-temperature zone are possible even for small scales of heterogeneity (microheterogeneous combustion mode).