Mixed Hybrid Finite Element formulation for water flow in unsaturated porous media

被引：0

作者：

Le Potier, C ^{[1
]}

Mouche, E ^{[1
]}

Genty, A ^{[1
]}

Benet, LV ^{[1
]}

Plas, F ^{[1
]}

机构：

[1] CE Saclay, Commissariat Energie Atom, DMT, SEMT,TTMF, F-91191 Gif Sur Yvette, France

来源：

COMPUTATIONAL METHODS IN CONTAMINATION AND REMEDIATION OF WATER RESOURCES: PROCEEDINGS OF 12TH INTERNATIONAL CONFERENCE ON COMPUTATIONAL METHODS IN WATER RESOURCES, VOL 1 | 1998年 / 12卷

关键词：

D O I：

暂无

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The Mixed Hybrid Finite Element formulation is applied to the simulation of water flow in unsaturated porous media, especially in clayey media. Two phases are taken into account: water and air. Air is compressible and soluble. The infiltration model is solved numerically using capillary and air head pressures as main variables. The use of head pressures prevents stability problems induced by gravity. The time discretization is fully implicit and the equations are solved within a sequential iterative Picard scheme. The hybridization of the formulation enables the homogeneization of non linear parameters on each mesh and leads to a better precision. Several validation and qualification tests, of increasing complexity, are presented.

引用

页码：297 / 304

页数：8