Simultaneous transfer of heat and moisture in porous media
Simultaneous transfer of heat and moisture in porous media
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DOI：
10.1029/tr039i005p00909
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发表时间：
1958-10
期刊：
影响因子：
--
通讯作者：
D. D. Vries-D.
中科院分区：
文献类型：
--
作者：
D. D. Vries-D.
本文建立了在重力、温度梯度和含水率梯度共同作用下多孔介质中热湿传递的微分方程组。这些方程是Philip和de弗里斯[1957]导出的方程的推广。特别地，在液相和气相中的水分含量的变化之间进行一致的区分。本文以粘壤土和中砂两种土壤为例，详细讨论了稳态热传导中热湿传递的相互作用。的行为被发现是依赖于水分传输的边界条件，温度梯度的方向和两个水分扩散系数的比值enterbag在分析中。
Simultaneous differential equations for the transfer of heat and moisture in porous media under the combined influence of gravity and gradients of temperature and moisture content are developed. These equations are a generalization of those derived by Philip and de Vries [1957]. In particular a consistent distinction is made between changes of moisture content in the liquid and the vapor phase. The interaction between heat and moisture transfer in steady state heat conduction is discussed in detail using numerical values for two soils, a clay loam and a medium sand. The behavior is found to be dependent on the boundary conditions for moisture transfer, on the direction of the temperature gradient and on the ratio of two moisture diffusivities enterbag in the analysis.