Two‐Dimensional Coupled Hydromechanical Modeling of Water Infiltration into a Transversely Isotropic Unsaturated Soil Region
Two‐Dimensional Coupled Hydromechanical Modeling of Water Infiltration into a Transversely Isotropic Unsaturated Soil Region
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DOI：
10.2136/vzj2013.04.0072
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发表时间：
2013-11
影响因子：
2.8
通讯作者：
L.Z. Wu;A. Selvadurai;R. Huang
中科院分区：
文献类型：
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作者：
L.Z. Wu;A. Selvadurai;R. Huang
通过考虑质量守恒、达西定律和多孔骨架的弹性变形能力，建立了控制流体渗入不饱和横向各向同性多孔介质的偏微分控制方程。使用傅里叶变换技术获得了有限范围不饱和多孔介质中二维耦合渗透的解析解。该解析公式用于研究横向各向同性不饱和多孔介质的二维渗透和蒸发问题。本研究对地表有补给的横向各向同性可变形多孔区域二维耦合渗透问题的解析解和计算估计进行了比较。结果表明，当不饱和多孔介质具有水力各向同性时，压头变化最快。
The partial differential governing equation governing fluid infiltration into an unsaturated transversely isotropic porous medium was developed by considering mass conservation, Darcy's law, and the elastic deformability of the porous skeleton. Analytical solutions for two‐dimensional coupled infiltration in an unsaturated porous medium of finite extent were obtained using a Fourier transform technique. The analytical formulation was used to examine the two‐dimensional infiltration and evaporation problem for a transversely isotropic unsaturated porous medium. This study provides a comparison between the analytical solution and computational estimates for a two‐dimensional coupled infiltration problem in a transversely isotropic deformable porous region where there is recharge at the surface. The results indicate that the pressure head changes occur most rapidly when the unsaturated porous medium is hydraulically isotropic.