Network modelling of fluid retention behaviour in unsaturated soils
Network modelling of fluid retention behaviour in unsaturated soils
复制标题
非饱和土中流体滞留行为的网络建模
DOI：
10.1051/e3sconf/20160911016
复制
发表时间：
2016
影响因子：
--
通讯作者：
Athanasiadis I
中科院分区：
文献类型：
--
作者：
Athanasiadis I
本文介绍了不饱和多孔材料的保留行为的离散建模。一个网络的方法是使用内的统计体积元素（SVE），适用于随后使用的流体力学分析和纳入多尺度数值模拟。土壤孔隙结构由连接球体的圆柱形管道网络模拟，球体代表土壤空隙，管道代表相互连接的喉部。管道和球体的位置由域的Voronoi细分确定。原始方面的建模包括一种形式的周期性边界条件的实施首次应用到这种类型的网络，一种新的孔隙体积缩放技术，以提供更逼真的建模和一个新的程序，用于启动干燥或润湿路径的网络模型采用周期性边界条件。模型模拟，采用两个线性累积概率分布来表示球和管半径的分布，提出了从砂岩上的压汞试验报告的保留行为。
The paper describes discrete modelling of the retention behaviour of unsaturated porous materials. A network approach is used within a statistical volume element (SVE), suitable for subsequent use in hydro-mechanical analysis and incorporation within multi-scale numerical modelling. The soil pore structure is modelled by a network of cylindrical pipes connecting spheres, with the spheres representing soil voids and the pipes representing inter-connecting throats. The locations of pipes and spheres are determined by a Voronoi tessellation of the domain. Original aspects of the modelling include a form of periodic boundary condition implementation applied for the first time to this type of network, a new pore volume scaling technique to provide more realistic modelling and a new procedure for initiating drying or wetting paths in a network model employing periodic boundary conditions. Model simulations, employing two linear cumulative probability distributions to represent the distributions of sphere and pipe radii, are presented for the retention behaviour reported from a mercury porosimetry test on a sandstone.
DOI：
--
发表时间：
1971
期刊：
影响因子：
--
作者：
G. Mason
通讯作者：
G. Mason