Influence of pore space heterogeneity on mineral dissolution and permeability evolution investigated using lattice Boltzmann method
Influence of pore space heterogeneity on mineral dissolution and permeability evolution investigated using lattice Boltzmann method
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DOI：
10.1016/j.ces.2021.117048
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发表时间：
2022
影响因子：
4.7
通讯作者：
Yutian Zhang;F. Jiang;T. Tsuji
中科院分区：
文献类型：
--
作者：
Yutian Zhang;F. Jiang;T. Tsuji
采用数值模拟方法研究了孔隙空间非均质性对矿物溶解和渗透率演化的影响。通过线性布尔模型生成人工多孔介质，并使用Euler-Poincaré特征（即，欧拉数）。本文应用具有双粒子分布函数的格子Boltzmann方法模拟了流体流动和扩散过程共同作用下的矿物溶解过程。进行了模拟，以研究广泛的Péclet（Pe）和Damköhler（Da）数和各种孔几何形状的溶解模式。六个溶解制度进行了观察，这些溶解制度之间的两种类型的过渡现象的特点。在高PeandDa时，溶解模式强烈依赖于孔隙非均质性。此外，还观察到四种类型的孔渗关系。这些关系受到高D数孔隙非均质性的影响。
The influence of pore space heterogeneity on mineral dissolution and permeability evolution in porous media was investigated using a numerical approach. Artificial porous media were generated by the linear Boolean model, and pore heterogeneity was evaluated using the Euler–Poincaré characteristic (i.e., Euler number). We applied the lattice Boltzmann method with dual particle distribution functions to simulate mineral dissolution under the combined effect of fluid flow and a diffusion process. Simulations were conducted to investigate dissolution patterns for a wide range of Péclet (Pe) and Damköhler (Da) numbers and various pore geometries. Six dissolution regimes were observed, and two types of transition phenomena between these dissolution regimes could be characterized. At highPeandDa, the dissolution patterns strongly depended on the pore heterogeneity. In addition, four types of porosity–permeability relationship were observed. These relationships were influenced by the pore heterogeneity at highDanumbers.