Simulation of Infiltration Processes in the Unsaturated Zone Using a Multiscale Approach
Simulation of Infiltration Processes in the Unsaturated Zone Using a Multiscale Approach
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DOI：
10.2136/vzj2011.0193
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发表时间：
2012-08
影响因子：
2.8
通讯作者：
Frederike Kissling;R. Helmig;C. Rohde
中科院分区：
文献类型：
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作者：
Frederike Kissling;R. Helmig;C. Rohde
We consider the infiltration of a wetting fluid into a homogeneous porous medium and the formation of preferred flow paths with saturation overshoots. These are caused by dynamic capillary pressure effects which can be modeled by the rate‐dependent approach of Hassanizadeh and Gray. To track the overshoot wave numerically, we proposed an extended Heterogeneous Multiscale Method. In the approach, the rate‐dependent model takes the role of a microscale model. The算法应用于几个渗透问题。
We consider the infiltration of a wetting fluid into a homogeneous porous medium and the formation of preferential flow paths with saturation overshoots. These are caused by dynamic capillary pressure effects which can be modeled by the rate‐dependent approach of Hassanizadeh and Gray. To track the overshoot wave numerically, we propose an extended Heterogeneous Multiscale Method. In the approach, the rate‐dependent model takes the role of a microscale model. The algorithm is applied to several infiltration problems.