Two-phase flow in correlated pore-throat random porous media
文献类型：期刊论文
| 作者 | J. P. Tian ; K. L. Yao |
| 刊名 | Chinese Physics
 |
| 出版日期 | 2002 |
| 卷号 | 11期号:4页码:358-365 |
| 关键词 | correlation parameter fractal dimension sweep efficiency scaling function diffusion-limited-aggregation viscous fingers percolation displacement simulations growth ratio |
| ISSN号 | 1009-1963 |
| 中文摘要 | We have constructed a porous media model in which there are percolation clusters with varying percolation probability P and correlated site-bonds. Taking into account both the pore and the throat geometry, the viscous fingering (VF) in porous media has been investigated by using the standard over-relaxed Gauss-Seidel scheme. The simulation results show that the VF structure varies with the correlation parameter epsilon, the viscosity ratio M and the percolation probability P. The smaller the correlation parameter e, the greater the deviation of the normalized size distribution of the invaded throat N-inv(r) from the truncated Rayleigh distribution. For a larger viscosity ratio M, the VF pattern looks like a diffusion-limited-aggregation structure in percolation clusters. The fractal dimension D increases with the increase of the percolation probability P and the correlation parameter epsilon. The velocity distribution f (alpha) of VF in percolation clusters is of a parabola-like curve. The tail of the distribution (large alpha) is longer for a larger correlation parameter epsilon. For a smaller epsilon, the distribution is very sharp. The sweep efficiency E decreases along with the decrease of the correlation parameter e and the increase of the network size L-nz. E has a minimum as L increases up to the maximum no matter what the values of P, M and epsilon. The E similar to L-nz curve has a frozen zone and an active zone. The geometry and the topology of the porous media have strong effects on the displacement processes and the structure of VF. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/36422]  |
| 专题 | 金属研究所_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. Two-phase flow in correlated pore-throat random porous media[J]. Chinese Physics,2002,11(4):358-365. |
| APA | J. P. Tian,&K. L. Yao.(2002).Two-phase flow in correlated pore-throat random porous media.Chinese Physics,11(4),358-365. |
| MLA | J. P. Tian,et al."Two-phase flow in correlated pore-throat random porous media".Chinese Physics 11.4(2002):358-365. |
入库方式： OAI收割
来源：金属研究所
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