Investigation of Gravity‐Driven Infiltration Instabilities in Smooth and Rough Fractures Using a Pairwise‐Force Smoothed Particle Hydrodynamics Model
Investigation of Gravity‐Driven Infiltration Instabilities in Smooth and Rough Fractures Using a Pairwise‐Force Smoothed Particle Hydrodynamics Model
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DOI：
10.2136/vzj2018.08.0159
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发表时间：
2019-01
影响因子：
2.8
通讯作者：
E. Shigorina;A. Tartakovsky;J. Kordilla
中科院分区：
文献类型：
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作者：
E. Shigorina;A. Tartakovsky;J. Kordilla
我们研究渗透动力学在光滑和粗糙的裂缝，使用三维SPH模型。粗糙度导致流动指进和优先流动路径的形成。分形粗糙度导致平均指尖速度的减速。手指的速度方差与粗糙度呈正相关。标准化手指速度和长度尺度符合分析预测。
We study infiltration dynamics in smooth and rough fractures using a 3D SPH model. Roughness induces the formation of flow fingering and preferential flow paths. Fractal roughness leads to a deceleration of average fingertip velocities. The velocity variance of fingers positively correlates with the degree of roughness. Normalized finger velocity and length scale in accordance with analytical predictions.