【摘要】 作者在本文中介绍了基于格子波耳兹曼模型的双重孔隙介质中流体运移的数值模拟计算方法。我们从格子波耳兹曼碰撞模型出发 ,利用格子波耳兹曼方程、Chapman -Enskog展开 ,以及多尺度技术 ,得到了描述双重孔隙介质中流体迁移的二维扩散方程。利用格子气自动机方法计算该扩散方程 ,实现了对双重孔隙介质中流体运移过程的数值仿真模拟。数值实验表明 ,我们所使用的方法正确、有效更多还原

【Abstract】 This paper introduces a numerical modeling technique for fluid flow in double porosity medium, which is based on lattice Boltzmann (LB) model. A 2D diffusion equation describing fluid flow in double porosity medium is derived from the lattice Boltzmann collision model. The Lattice Boltzmann equation, Chapman-Enskog expansion and multiscale technique are used in the derivation. By solving the diffusion equation using the lattice gas automata (LGA), we develop a numerical technique for the modeling of fluid flow in double porosity medium. A numerical test example showed is the perfect.更多还原