Nonstationary Regimes of Transformation of Multilayered Heterogeneous Systems
P. M. Krishenik, A. G. Merzhanov, and K. G. Shkadinskii*
Institute of Structural Macrokinetics and Material Science, Russian Academy of Sciences, Chernogolovka 142432, petr@ism.ac.ru;
*Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka 142432
Pages: 313-321
Abstract
A nonstationary mathematical model of thermal propagation of flame in a layered heterogeneous system is proposed. The structure and dynamics of the frontal exothermal transformation in quasihomogeneous, transitional, and relay-race regimes are studied. Averaged characteristics of the front and dynamics of transformation of individual elements of a "discrete" combustion wave are analyzed using the model proposed. A correlation is established between the combustion of a model medium and real heterogeneous compositions. It is shown that the maximum combustion velocity is reached at an intermediate level of medium dispersion in a transitional parametric region.
Key words: combustion waves, heterogeneous systems, multilayered nonstationary regimes, modeling.
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