A film-flow model to describe free water transport during drying of a hygroscopic capillary porous medium

被引：14

作者：

Goyeneche, M ^{[1
]}

Lasseux, D ^{[1
]}

Bruneau, D ^{[1
]}

机构：

[1] Esplanade Arts & Metiers, CNRS, UMR 8508, ENSAM,LEPT, F-33405 Talence, France

来源：

TRANSPORT IN POROUS MEDIA | 2002年 / 48卷 / 02期

关键词：

capillary porous medium; films; drying; irreducible saturation; relative permeabilities;

D O I：

10.1023/A:1015646307537

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this work, a two-phase film-flow model in a hygroscopic capillary tube is developed and extended to describe the two-phase capillary viscous transport in a network of parallel capillary tubes in terms of relative permeabilities. This film-flow approach is further considered to predict the longitudinal moisture transport in oak wood during drying. Numerical results obtained from this prediction are compared with data of convective drying experiments performed on samples of this wood. The comparison seems to confirm the physical relevance of a film-flow model to correctly represent the moisture transfer until the hygroscopic regime is reached.

引用

页码：125 / 158

页数：34

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