Abstract
Gas flow with surface reaction in porous media appears in various regions of engineering. In porous media with holes as small as a molecular mean free path, i. e., Knudsen number Kn of gas flow in the narrow channel is in the order of unity. Therefore, the direct simulation Monte Carlo (DSMC) method is suitable to solve transport phenomena in porous media. We perform 2D DSMC simulations of such a flow. Porous media are modeled as an aggregation of randomly-placed spherical particles. The shape of narrow channel in porous media is complicated. To reduce complexity, we propose the simplification for porous structures, i. e., we simplify solid bodies in porous media as aggregations of cubes or as aggregations of polyhedra. We perform simulations with and without simplification. We compare results and investigate effects of the simplification.
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