Non-mononotonical behaviour of reaction diffusion front width. Simulation studies in frame of dynamic lattice liquid (DLL) model

Investigations of anomalous behaviour of the reaction diffusion front for A + B › 2C (inert) and A + B › CC processes are presented. Computer simulation studies were performed using the model of dynamic lattice liquid (DLL) for both two- and three-dimensional cases. Special attention was paid to situations when the mobility of products C and CC significantly differs from the mobilities of reactants. Under such conditions, new kinds of dynamical behaviour were detected. The results obtained indicate that it is necessary to re-formulate the classical description of reaction diffusion front problem. The generalized formalism suggested in the paper should allow a proper description of dynamics of the reaction front over the whole time range including the case when the mobilities of reactants and products are differ