本程序系对格子Boltzmann方法中经典的D2Q9模型进行编程求解。该程序模拟了单相流体在单通道中的流动情况，在流动通道中可以添加不渗透固体，从而用于模拟流体扰流的情况。进一步可以增加不渗透固体的数量，达到模拟流体在多孔介质中的二维流动。该程序适用于初学者对LBM方法编程求解的理解，经二次开发后可以用于油气勘探开发领域。(This program solves the classical D2Q9 model of lattice Boltzmann method by programming. The program simulates the flow of single-phase fluid in a single channel, in which impermeable solids can be added to simulate the disturbance of fluid. Furthermore, the number of impermeable solids can be increased to simulate the two-dimensional flow of fluids in porous media. This program is suitable for beginners'understanding of the programming solution of LBM method, and can be used in the field of oil and gas exploration and development after secondary development.)