基于格子Boltzmann方法预测多孔介质的渗透率  

Prediction of Permeability in Porous Media Based on Lattice Boltzmann Method

作　　者：战洪仁[1] 侯新春[1] 曹颖[1] 李雅侠[1] 张先珍[1] 

机构地区：[1]沈阳化工大学能源与动力工程学院,辽宁沈阳110142

出　　处：《沈阳化工大学学报》2017年第1期63-66,共4页Journal of Shenyang University of Chemical Technology

基　　金：辽宁省博士科研启动基金项目(20141085)

摘　　要：多孔介质内的流动涉及许多工程应用.文章采用不可压缩的格子Boltzmann模型对多孔介质中的流场进行数值模拟,从微细尺度上得到多孔介质的结构特性及分布情况;同时,获得了多孔介质的渗透率与孔隙率近似成指数的变化关系.根据达西定律和格子Boltzmann方法进行数值模拟,成功获得多孔介质的渗透率,为有效研究孔隙尺度下的渗流问题提供了方法,同时为多孔介质的工程应用及理论研究提供了依据.The fluid flow in porous media is involved in various engineering applications, e. g. permea- bility has significant research value in oil and gas exploration field. In this paper, the flow field in porous media is simulated using incompressible lattice Boltzmann model, by which structure characteristics and distributions of porous medium were obtained with micro scale. Meanwhile, the permeability of porous media varied exponentially with the porosity of porous media. The permeability of porous medium can be successfully and directly predicted basing on numerical simulation of lattice Boltzmann method and Darcy law. The simulation provide an effective method to study the interstitial flow in micro scale, and also a foundation for the theoretical research and engineering application of porous media.

关 键 词：多孔介质 格子BOLTZMANN方法 孔隙率 渗透率 

分 类 号：O357.3[理学—流体力学]