Abstract
A solid porous fuel gasification in the low-temperature gas generator for a high-speed flying vehicle is studied numerically in the framework of volume averaged model. It is shown that during the filtration of hot gas (∼ 1000-1200 °C) through the porous medium the significant part of the solid fuel has relatively high temperature (∼ 180-450 °C) for a long time (10–70 s). This suggests that melting of common materials such as polyethylene or polymethylmethacrylate considered in the literature as the fuel for the gas generator is possible, if the porous media satisfies assumptions of the volume averaged approach. Based on the results of a parametric study, possible ways to prevent the melting of the gasifier are discussed.
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