Development of a numerical tool for soil-water direct simulation

提出了一种基于离散模型和计算流体力学的土体直接数值模拟方法。建立了一个适用于包含多个复杂形状颗粒的流体模拟的数值框架。然后，数值框架被应用到饱和土壤的渗透性模拟，并得到的结果进行了验证，使用过去提出的经验公式。虽然本文的研究还没有达到非饱和土的定量数值模拟，但直接数值模拟的潜力得到了肯定。

A numerical method was developed based on discrete modeling and computational fluid dynamics for direct numerical simulation of soils. A numerical framework for the fluid simulation including many particles with complex shape was developed. Then, the numerical framework was applied to a permeability simulation of saturated soil, and obtained results were validated using empirical equations proposed in the past. Although this study didn’t reach to quantitative numerical simulations of unsaturated soils, potential of the direct numerical simulation was confirmed.