Combustion Wave Propagation in between Two Reactive Layers: Mathematical Modeling with Account for Melting and Interdiffusion
K. G. Shkadinskya, S. A. Rogachevb, *, and P. M. Krishenikb, **
a Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russia
b Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, Russia
Correspondence to: *e-mail: rogachevsa@gmail.com
Correspondence to: **e-mail: petr@ism.ac.ru
Received 25 November, 2020
Abstract—Propagation of combustion wave in a two-layer system was numerically modelled with account for melting, interdiffusion, and heat losses. Combustion wave propagation in between two reactive layers of a bilayer structure was found capable of steady propagating until some critical bilayer thickness (lcr). An oscillation combustion mode arising above lcr was found to yield a product with periodic inhomogeneities in its structure. Strong heat losses led to encapsulation of combustion process into a shell of unreacted mixtures.
Keywords: combustion synthesis, two-layer system, mathematical modeling, interdiffusion
DOI: 10.3103/S1061386221010131