Computer Simulation of Radial Viscous Fingering in Two-Dimension Porous Media

田巨平; 姚凯伦

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Computer Simulation of Radial Viscous Fingering in Two-Dimension Porous Media

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摘要

A computer model of capillary and viscous fingering in a porous medium is presented which treats the medium as a square lattice connected with randomly chosen radius.The fractal properties of the model are studied for circular shell-shell aggregation by a Monte Carlo simulation.The simulation results show that the dimension D increases with decrease of the viscous ratio M and increase of the throat radius.It is found that the displacement process is stable when M=1,and viscous fingering pattern of porous media in the limit M→∞is similar to the diffusion-limited aggregation pattern in a uniform system.For larger viscous ratio M and smaller positive integer k,the fluid is situated in the co-existence region of viscous and capillary fingering.

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《中国物理快报：英文版》 |1998年第8期|577-578|共2页
作者
田巨平; 姚凯伦;
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作者单位

Department of Physics;

Huazhong University of Science and Technology;

Wuhan 430074;

Department of Basic Science;

Jianghan Petroleum Institute;

Jingzhou 434102;

CCAST(World Laboratory);

P.O.Box 8730;

Beijing 100080;

International Center for Material Physics;

Chinese Academy of Sciences;

Shenyang 110015;

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原文格式 PDF
正文语种 chi
中图分类流体力学;
关键词
viscous; capillary; aggregation;

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Computer Simulation of Radial Viscous Fingering in Two-Dimension Porous Media

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