Numerical model of the release of silver from a silver-impregnated porous ceramic matrix

This program solves the diffusion equation with sorption and mass transfer, as modified, by the Euler scheme with a second-order finite difference model in an asymmetric geometry for a bucket for a cylindrical representation of the ceramic cubes or the original silver-impregnated disk in the center of the bottom of the bucket. It is supporting material for a manuscript submission.本程序采用经修正的欧拉格式（Euler scheme）结合二阶有限差分模型（second-order finite difference model），求解了带有吸着（sorption）与传质（mass transfer）过程的修正型扩散方程，其数值模拟的几何场景为桶形容器的非对称结构，该结构可表征为陶瓷立方体的圆柱等效模型，或是位于该桶底中心的原始浸银圆盘。本程序为投稿学术稿件的配套支撑材料。