Analytical Treatment of Two-Phase Infiltration

Analytical Treatment of Two-Phase Infiltration
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两相渗透的分析处理

DOI：
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发表时间：
1970
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影响因子：
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通讯作者：
H. Morel‐Seytoux
H. Morel‐Seytoux
中科院分区：
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文献类型：
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作者：
Richard L. Brustkern;H. Morel‐Seytoux

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本文提出了均匀多孔介质一维渗流问题的近似解析处理方法。空气相和水相的运动被认为是。该程序假设毛细管压力可以忽略饱和度方程，而它是保留在一个未知的总流量的积分方程。这两个方程以逐步的方式求解，以产生饱和度剖面和任何时间的入渗速率。渗透率曲线获得了一些情况下，涉及不同的边界或初始条件或两者兼而有之。与从有限差分解得到的结果进行了比较。
An approximate analytical treatment for the problem of one-dimensional infiltration into a homogeneous porous medium is presented. Movement of both the air phase and the water phase is considered. The procedure assumes that capillary pressure can be neglected in the saturation equation, whereas it is retained in an integral equation for the unknown total flow. The two equations are solved in a step-wise manner to yield the saturation profile, and the infiltration rate at any time. Infiltration rate curves are obtained for a number of situations involving different boundary or initial conditions or both. Comparisons are made with results obtained from a finite difference solution.