格子Boltzmann方法
边值问题
插值(计算机图形学)
CFD中的边界条件
边界(拓扑)
Dirichlet分布
数学
节点(物理)
趋同(经济学)
限制
背景(考古学)
Dirichlet边界条件
数学分析
几何学
Neumann边界条件
运动(物理)
物理
机械
经典力学
Robin边界条件
地质学
声学
工程类
机械工程
古生物学
经济
经济增长
作者
Francesco Marson,Yann Thorimbert,Bastien Chopard,Irina Ginzburg,Jonas Lätt
出处
期刊:Physical review
日期:2021-05-21
卷期号:103 (5)
被引量:12
标识
DOI:10.1103/physreve.103.053308
摘要
We propose a new way to implement Dirichlet boundary conditions for complex shapes using data from a single node only, in the context of the lattice Boltzmann method. The resulting novel method exhibits second-order convergence for the velocity field and shows similar or better accuracy than the well established Bouzidi, Firdaouss, and Lallemand (2001) boundary condition for curved walls, despite its local nature. The method also proves to be suitable to simulate moving rigid objects or immersed surfaces either with or without prescribed motion. The core idea of the new approach is to generalize the description of boundary conditions that combine bounce-back rule with interpolations and to enhance them by limiting the information involved in the interpolation to a close proximity of the boundary.
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