包气带
渗透(认知心理学)
热扩散率
机械
热传导
流量(数学)
常量(计算机编程)
传热
对流
热力学
地质学
岩土工程
地下水
物理
神经科学
计算机科学
生物
程序设计语言
作者
Chao Shan,G.S. Bodvarsson
标识
DOI:10.1016/s0169-7722(03)00126-8
摘要
We present a simple analytical solution for one-dimensional steady heat transfer with convection and conduction through a multilayer system such as a vadose zone. We assume that each layer is homogeneous and has a constant thermal diffusivity. The mass/heat flow direction is perpendicular to the layers, and the mass flow rate is a constant. The analytical solution presented in this study also assumes constant known temperatures at the two boundaries of the system. Although the analytical solution gives the temperature as a function of a few parameters, we focus on the inverse application to estimate the percolation rate in a vadose zone. Example applications have shown that with reliable field observation data, the solution can be used to determine the percolation rate to high degree of accuracy (e.g., to mm/year). In some other cases, the solution may also be helpful in characterizing potential lateral flow along layer divides.
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