水道港口2025，Vol.46Issue(2)：178-186,9.
格子Boltzmann浅水模型的特征边界条件研究
Study of characteristic boundary conditions for the lattice Boltzmann shallow water model
摘要
Abstract
The lattice Boltzmann numerical model for the two-dimensional shallow water equations was established,and characteristic boundary conditions without reflection were introduced into the model for the first time.The lattice Boltzmann shallow water model and its characteristic boundary conditions were validated by using one-dimensional dam break wave and two-dimensional Gaussian source water wave.The numerical model was applied to simulate flow around a two-dimensional square cylinder.The results show that the lattice Boltzmann shallow water model accurately simulates the propagation process of one-dimensional dam break wave,and the introduced characteristic boundary conditions effectively eliminate non-physical reflected waves generated by the calculation domain's boundaries.The stability and accuracy of lattice Boltzmann shallow-water model are improved.关键词
二维浅水方程/格子Boltzmann方法/特征边界条件/溃坝波/高斯源水波/方柱绕流Key words
two-dimensional shallow water equations/central moments lattice Boltzmann method/characteristic boundary conditions/dam-break wave/Gaussian source water wave/flow around a square column分类
交通运输引用本文复制引用
黄伟勋,张庆河,张金凤..格子Boltzmann浅水模型的特征边界条件研究[J].水道港口,2025,46(2):178-186,9.基金项目
国家重点研发计划项目(2021YFB2601100) （2021YFB2601100）
