首页> 外文期刊>Journal of Contaminant Hydrology >Modeling transport in a single crack by the dual-porosity concept with a boundary layer at the interface
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Modeling transport in a single crack by the dual-porosity concept with a boundary layer at the interface

机译:通过双孔隙率概念在界面处具有边界层的单裂纹中传输模型

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A model for contaminant transport along a discrete fracture in a porous rock matrix is developed and solved analytically. The focus here is on the dynamics of solute exchange between the matrix and a single crack and its effect on solute transport within the crack and the chemical distribution with time at any depth. A laminar boundary layer of near stagnant fluid exists at the interface between the fracture and the matrix through which a rate-limited mass transfer takes place. The flow and the dissolved chemical concentration normal to the flow direction are essentially uniform in the crack except for the boundary layer.
机译:建立了污染物在多孔岩石基质中沿离散裂缝传输的模型,并进行了解析求解。这里的重点是基体与单个裂纹之间的溶质交换动力学,及其对裂纹内溶质迁移以及在任何深度随时间的化学分布的影响。在断口和基质之间的界面处存在接近停滞的流体的层状边界层,通过该边界层发生了速率受限的质量传递。除边界层外,裂纹中的流动和垂直于流动方向的溶解化学浓度基本均匀。

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