摘要
将随机模拟方法应用于多孔介质中的物质传输过程,对不同孔隙通道联结率下的弥散规律进行了分析.模 拟中发现:在渗流阈值附近,存在反常弥散和优势通道现象,纵向弥散系数也比通常欧几里德空间大得多;流体在多 孔介质中的弥散受结构影响很大.
The dispersion process in porous media is analysed and simulated by use of the random simulation method in this paper. Anomalous dispersion and the preferential path for dispersion flow are found near a percolation threshold caused by random pore removal or blockage. The calculated results show that the longitudinal dispersivity is greater when it is near a percolation threshold than in Euclidean space.
出处
《应用科学学报》
CAS
CSCD
2003年第1期88-92,共5页
Journal of Applied Sciences
基金
国家重点基础研究发展规划资助项目(G2000026303)
