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应用科学学报 ›› 2003, Vol. 21 ›› Issue (1): 88-92.

• 论文 • 上一篇    下一篇

多孔介质渗流随机模型

张东辉1,2, 金峰2, 施明恒1, 杨浩2   

  1. 1 东南大学动力工程系 江苏 南京 210096;
    2 中国科学院南京土壤研究所 江苏 南京 210096
  • 收稿日期:2001-11-20 修回日期:2002-03-14 出版日期:2003-03-10 发布日期:2003-03-10
  • 作者简介:张东辉(1970-),男,江苏丹阳人,讲师,博士生;施明恒(1942-),男,江苏常熟人,教授,博导.
  • 基金资助:
    国家重点基础研究发展规划资助项目(G2000026303)

A Random Simulation Model in Porous Media

ZHANG Dong-hui1,2, JIN Feng2, SHI Ming-heng1, YANG Hao2   

  1. 1 Power Engineering Department, Southeast University, Nanjing 210096. China;
    2 LMCP Institute of Soil Science, Chinese Academy of Science, Nanjing 210096, China
  • Received:2001-11-20 Revised:2002-03-14 Online:2003-03-10 Published:2003-03-10

PDF

111

被引次数

27

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.

关键词: 多孔介质, 随机模拟, 逾渗理论, 反常弥散

Abstract: 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.

Key words: random simulation, anomalous dispersion, porous media, percolation theory

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