Homogenization approach of advection and diffusion in cracked porous material

被引：46

作者：

Dormieux, L ^{[1
]}

Lemarchand, E ^{[1
]}

机构：

[1] CERMMO ENPC, F-77420 Champigny Sur Marne, France

来源：

JOURNAL OF ENGINEERING MECHANICS-ASCE | 2001年 / 127卷 / 12期

关键词：

D O I：

10.1061/(ASCE)0733-9399(2001)127:12(1267)

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The present paper aims at studying the effect of microcracks opening on the diffusion and advection processes in a saturated porous medium. It is based on a micromechanical homogenization approach. The effects of porosity and microcracks are addressed in microscopic and mesoscopic levels to yield estimates of the effective diffusion and permeability tensors. Closed-form expressions and numerical results are obtained. For instance, the effect of the crack density parameter c on the overall properties is discussed: (1) for a given value of e, the maximum overall diffusion coefficient decreases for increasing values of crack radius; and (2) for large crack opening, the overall permeability is mainly controlled by E and almost independent of the applied stress and the crack radius.

引用

页码：1267 / 1274

页数：8

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