To improve the computational efficiency of Lattice Boltzmann Method (LBM), inthis paper, LBM with doule meshes is presented, whose basic ideology is borrowed from the FiniteDifference Method (FDM). Taking merits of bo...To improve the computational efficiency of Lattice Boltzmann Method (LBM), inthis paper, LBM with doule meshes is presented, whose basic ideology is borrowed from the FiniteDifference Method (FDM). Taking merits of both the coarse and fine meshes, the presented methodspeeds up the convergence, and increases the computational efficiency. Three numerical examples,two-dimensional Poiseuille flow, backward-facing step flow and flow in channel with a rectangularslot, are illustated, proving that time cost by double-mesh LBM is much less than that by commonlyused u-niform-mesh LBM, and the results obtained are correct and dependable.展开更多
文摘To improve the computational efficiency of Lattice Boltzmann Method (LBM), inthis paper, LBM with doule meshes is presented, whose basic ideology is borrowed from the FiniteDifference Method (FDM). Taking merits of both the coarse and fine meshes, the presented methodspeeds up the convergence, and increases the computational efficiency. Three numerical examples,two-dimensional Poiseuille flow, backward-facing step flow and flow in channel with a rectangularslot, are illustated, proving that time cost by double-mesh LBM is much less than that by commonlyused u-niform-mesh LBM, and the results obtained are correct and dependable.
