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arXiv 2001.05275math.NAcs.NA
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裂隙多孔介质中的反应流

Reactive flow in fractured porous media

Alessio Fumagalli, Anna Scotti

摘要:

在这项工作中,我们提出了一个模型简化程序,以获得一个混合维框架的数学模型在裂缝多孔介质中的反应运输。裂缝是地下的重要通道,允许岩石基质中存在的流体快速循环,通常具有低渗透性。然而,由于充填过程,裂缝可能会改变其水力特性,并成为流动的障碍,从而形成不透水块体。裂缝的几何和物理性质需要特殊处理,以使随后的数值离散化能够负担得起且准确。这项工作的目的是引入一个简单而完整的数学模型,以考虑这种成岩作用的化学反应将闭塞或空部分的多孔介质,特别是裂缝。

英文摘要:

In this work we present a model reduction procedure to derive a hybrid-dimensional framework for the mathematical modeling of reactive transport in fractured porous media. Fractures are essential pathways in the underground which allow fast circulation of the fluids present in the rock matrix, often characterized by low permeability. However, due to infilling processes fractures may change their hydraulic properties and become barriers for the flow creating impervious blocks. The geometrical as well as the physical properties of the fractures require a special treatment to allow the subsequent numerical discretization to be affordable and accurate. The aim of this work is to introduce a simple yet complete mathematical model to account for such diagenetic effects where chemical reactions will occlude or empty portions of the porous media and, in particular, fractures.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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