随机四参数法生成多孔介质及渗流模拟

本文基于多孔介质内流动的广泛应用背景,模拟了多孔介质渗流。采用随机四参数生长法生成了多孔介质模型,并对模型中的微小固相进行了过滤处理。将随机四参数生长法生成的多孔介质结合格子玻尔兹曼方法D2Q9模型模拟了压力驱动的多孔介质中的渗流。通过将模拟结果与著名的CK理论公式的计算结果进行比较,发现在孔隙率高时误差较小(φ=0.9时,误差约为6%)。研究表明在高孔隙率时采用文中的方法得到的多孔介质渗透率及孔隙尺度的流动结果较为准确。

Lattice Boltzmann Simulation of Flow in Random Porous Media Constructed by Quartet Structure Generation Set

Based on the wide application background of flow in porous media,this paper Simulates the seepage of porous media.A porous medium model was generated by quartet structure generation set and the micro solid phase in the model was filtered.Then simulates the seepage in a pressure-driven porous medium by lattice Boltzmann method D2Q9 model.By comparing the simulation results with the calculation results of the well-known CK theoretical formula,it is found that the error is small when the porosity is high(the error is about 6% when φ=0.9).Results have shown that the permeability of porous media,and the flow results of pore size obtained by the method in this paper are more accurate at high porosity.