Ageing of random porous media following fluid deterministic displacement, freezing, thawing

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	Ageing of random porous media following fluid deterministic displacement, freezing, thawing
	J. P. Tian; K. L. Yao
	2000
发表期刊	European Physical Journal B
ISSN	1434-6028
卷号	14 期号:3 页码:543-549
摘要	This paper introduces and investigates a simple model of random porous media degradation via several fluid displacing, freezing, and thawing cycles. The fluid transport is based on the deterministic method. The result shows that the topology and the geometry of porous media have a strong effect on displacement processes. The cluster size of the viscous fingering (VF) pattern in the percolation cluster increases with the increase of iteration parameter n. When iteration parameter n greater than or equal to 10, the VF pattern does not change with n. When r --> 1 and n greater than or equal to 5, the peak value of the distribution N-mat(r) increases as n increases N-mat(r) is the normalized distribution of throat sizes after different displacement-damage but before the freezing. The distribution of throat size N(r) after displacement but before freezing damage, shows that the major change, after successive cycles, happens at r > 0.9. The peak value of the distribution N-inv(r) reaches a maximum when n greater than or equal to 10 and r = 1, where N-inv(r) is the normalized distribution of the size of invaded throats for different iterations. This result is different from invasion percolation. The distribution of velocities normal to the interface of VF in the percolation cluster is also studied. When n greater than or equal to 10, the scaling function distribution is very sharp. The sweep efficiency E increases along with the increasing of iteration parameter n and decreases with the network size L. And E has a minimum as L increases to the maximum size of the lattice. The VF pattern in the percolation cluster has one frozen zone and one active zone.
部门归属	wuhan inst sci & technol, dept phys, wuhan 430073, peoples r china. huazhong univ sci & technol, dept phys, wuhan 430074, peoples r china. ccast, world lab, beijing 100080, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china.;tian, jp (reprint author), wuhan inst sci & technol, dept phys, wuhan 430073, peoples r china
关键词	2-phase Flow Simulations Percolation Migration Invasion Models
URL	查看原文
WOS记录号	WOS:000086562900019
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/37174
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. P. Tian,K. L. Yao. Ageing of random porous media following fluid deterministic displacement, freezing, thawing[J]. European Physical Journal B,2000,14(3):543-549.
APA	J. P. Tian,&K. L. Yao.(2000).Ageing of random porous media following fluid deterministic displacement, freezing, thawing.European Physical Journal B,14(3),543-549.
MLA	J. P. Tian,et al."Ageing of random porous media following fluid deterministic displacement, freezing, thawing".European Physical Journal B 14.3(2000):543-549.