Simulation of Gasification of a Two-Layer Porous Polymer in a Low-Temperature Gas Generator.

The gasification of a two-layer porous solid fuel in a combined charge of a low-temperature gas generator has been studied using a mathematical model and a computational algorithm implemented in the OpenFOAM software. In the computational experiments, the influence of the two-layer nature of a porous solid fuel on its gasification has been investigated for gasifiers containing polymethylmethacrylate and polyethylene as fuels with different relative position of their layers. It has been shown that in two-layer fuels, two gasification waves can propagate simultaneously, due to which the relative mass flow rate of gasification products can have two local maxima. The operating time of a gas generator with a two-layer porous fuel depends ambiguously on the relative position of the layers and can go beyond the range between the operating times of the gasifier with each of the fuels. [ABSTRACT FROM AUTHOR]