用LBM结合非平衡外推方法实现的圆柱绕流，柱面边界以非平衡外推方法实现。-LBM combined with the extrapolation method of achieving non-equilibrium flow around a cylinder, cylinder boundary to achieve non-equilibrium extrapolation method.

格子玻尔兹曼方法用于计算顶盖驱动流问题，采用非平衡外推格式边界条件-The lattice Boltzmann method is used to calculate the lid-driven flow problems, the use of non-equilibrium extrapolation formats boundary conditions