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首页> 外文期刊>Geophysical Research Letters >Pore scale study of flow in porous media: Scale dependency, REV, and statistical REV
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Pore scale study of flow in porous media: Scale dependency, REV, and statistical REV

机译：多孔介质中流动的孔尺度研究：尺度相关性，REV和统计REV

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Flow in porous media is studied at the pore-scale with lattice Boltzmann simulations on pore geometries reconstructed from computed microtomographic images. Pore scale results are analyzed to give quantities such as permeability, porosity and specific surface area at various scales and at various locations. With this, some fundamental issues such as scale dependency and medium variability can be assessed quantitatively. More specifically, the existence and size of the well known concept, representative elementary volume (REV), can be quantified. It is found that the size of an REV varies spatially and depends on the quantity being represented. For heterogeneous media, a better measure may be the so called "statistical REV", which has weaker requirements than does the deterministic REV. [References: 15]
机译：多孔介质中的流动是在孔尺度上进行的，其中使用从计算的显微照片重建的孔几何学的格子Boltzmann模拟。分析孔垢结果以给出各种比例和不同位置的量，例如渗透率，孔隙率和比表面积。这样，就可以定量评估一些基本问题，例如规模依赖性和中等变异性。更具体地说，可以量化众所周知的概念（代表性基本体积（REV））的存在和大小。发现REV的大小在空间上变化并且取决于所表示的数量。对于异构媒体，更好的方法可能是所谓的“统计REV”，其要求比确定性REV弱。 [参考：15]

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