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The impact of heterogeneous anisotropy of porous media on density-driven convection

机译:多孔介质异质各向异性对密度驱动对流的影响

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Purpose - The aim of this study is to numerically simulate the density-driven convection in heterogeneous porous media associated with anisotropic permeability field, which is important to the safe and stable long term CO_2 storage in laminar saline aquifers. Design/methodology/approach - The study uses compact finite difference and the pseudospectral method to solve Darcy's law. Findings - The presence of heterogeneous anisotropy may result in non-monotonic trend of the breakthrough time and quantity of CO_2 dissolved in the porous medium, which are important to the CO_2 underground storage. Originality/value - The manuscript numerically study the convective phenomena of mixture contained CO_2 and brine. The phenomena are important to the process of CO_2 enhanced oil recovery. Interesting qualitative patterns and quantitative trends are revealed in the manuscript.
机译:目的 - 本研究的目的是在与各向异性渗透场相关的异质多孔介质中的数值上模拟密度驱动对流,这对于层流盐水料中的安全和稳定的长期CO_2储存是重要的。设计/方法/方法 - 该研究采用紧凑的有限差异和伪谱法解决达西法律。结果 - 异质各向异性的存在可能导致溶解在多孔介质中的突破时间和溶解的CO_2的量的非单调趋势,这对CO_2地下储存很重要。原创性/值 - 原稿数值研究混合物的对流现象含有CO_2和盐水。该现象对于CO_2增强的采油过程很重要。在稿件中揭示了有趣的定性模式和定量趋势。

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