Transport in heterogeneous media: Tracer dynamics in complex flow networks

被引：5

作者：

Basagaoglu, H ^{[1
]}

Ginn, TR

Green, CT

McCoy, BJ

机构：

[1] Univ Calif Davis, Dept Civil & Environm Engn, Livermore, CA 95616 USA

[2] Univ Calif Davis, Dept Land Air & Water Resources, Livermore, CA 95616 USA

[3] Univ Calif Davis, Dept Chem Engn & Mat Sci, Livermore, CA 95616 USA

来源：

AICHE JOURNAL | 2002年 / 48卷 / 05期

关键词：

D O I：

10.1002/aic.690480521

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Large-scale inhomogeneities in natural porous media profoundly affect the dynamic response of conveyed tracers. It isproposed that tracer dynamics in heterogeneous porous media can be represented by temporal moments based on parallel and series unit models of homogeneous columns, stirred volumes, or mass-transfer-connected closed compartments. The rules of combining the moments for elementaty volumes are based on units (1) in series, where output from the preceding units is the input to the succeeding unit, and (2) in parallel, where the splitting or joining flow paths control the response. For a network of elementary volumes in series or parallel, fate and transport of contaminants in heterogeneous media can be analyzed simply in a deterministic framework. Results for several simple series and parallel models show the wealth of responses that can be quantitatively described by this procedure.

引用

页码：1121 / 1131

页数：11

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