Precise simulation of gas-water interface and its application to mass transport.

本研究尝试用粒子法模拟干湿过程中气水界面形状的变化，并分析其对多孔介质中气体扩散系数的影响，采用了粒子法的一种变体--移动粒子半隐式法（MPS）。用这种方法，我成功地模拟了润湿的孔喉，这是形成在三个球体之间，但模拟的气/水界面的形状是远远不能令人满意的。所以，我开始尝试一种新的方法来计算基于几何的界面。

In this study, I tried to apply the particle method for simulating the change in the shape of gas/water interface during wetting and drying processes, and in addition analyze its effect on the gas diffusion coefficient in porous media.I used one of the variation of the particle method, moving-particle-semi-implicit (MPS). With this method, I successfully simulated the wetting of the pore throat, which is formed among three spheres; however, the simulated shape of the gas/water interface was far from satisfaction. So, I began to try a new method for calculating the interface based on geometry.