Hygrothermal Field Considering Nonlinear Coupling Between Heat and Binary Moisture Diffusion in Porous Media
Hygrothermal Field Considering Nonlinear Coupling Between Heat and Binary Moisture Diffusion in Porous Media
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DOI：
10.1080/01495739.2014.936232
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发表时间：
2014-07
影响因子：
2.8
通讯作者：
M. Ishihara;Y. Ootao;Yoshitaka Kameo
中科院分区：
文献类型：
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作者：
M. Ishihara;Y. Ootao;Yoshitaka Kameo
研究了考虑非线性耦合的热湿耦合条件下多孔介质中的湿热场。分别用具有不同扩散系数的溶解和气相模拟固体和空隙中的水分。考虑了气态水分转变为溶解水分所产生的热量以及由于温度变化而从溶解水分转变为气态水分的过程。溶解水分和气态水分之间的平衡由化学平衡决定。导出了非线性耦合扩散方程组，并证明了无限长条的定常场。
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.