HYGROTHERMAL FIELD CONSIDERING NONLINEAR COUPLING BETWEEN HEAT AND BINARY MOISTURE DIFFUSION IN POROUS MEDIA

被引：15
|
作者：
Ishihara, Masayuki [1 ]
Ootao, Yoshihiro [1 ]
Kameo, Yoshitaka [1 ]
机构：
[1] Osaka Prefecture Univ, Grad Sch Engn, Sakai, Osaka 5998531, Japan
来源：
JOURNAL OF THERMAL STRESSES | 2014年 / 37卷 / 10期
关键词：
Binary moisture; Diffusion equation; Hygrothermal field; Nonlinear coupling; Porous medium; ANNULAR CYLINDER; LINEAR-THEORY; STRESSES;
D O I：
10.1080/01495739.2014.936232
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The hygrothermal field in porous media exposed to heat and moisture considering nonlinear coupling was studied. Dissolved and gaseous phases with different diffusivities were used to model the moisture in solids and voids, respectively. Heat generated by the transformation of gaseous moisture into dissolved moisture was considered along with the transformation from dissolved moisture into gaseous moisture due to a change in temperature. The balance between dissolved and gaseous moistures is determined by the chemical equilibrium. A system of nonlinear coupling diffusion equations was derived, and a steady field for an infinite strip was demonstrated.
引用
收藏
页码：1173 / 1200
页数：28
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