THE EFFECT OF INFILTRATION AND REACTANT GAS PRESSURE ON SPIN COMRUSTION IN A GAS-SOLID SYSTEM

摘要

A mathematical model of surface spin combustion in a binary gas-solid system under the approximation of quasi-homogeneity of the reactant porous media (i.e., low Semenov number, Se1) has been developed. The model takes into account the gas infiltration, kinetics of heterogeneous chemical reaction between condensed and gas phases, and difference in their temperatures. The effects of infiltration parameters and reactant gas pressure on characteristics of spin combustion mode have been studied. It was shown that depending on value of the infiltration Peclet number, two different regimes of the spin propagation can be realized: thermal (Pe 1) and infiltration (Pe∞1).