Lattice-Boltzmann Simulations of the Convection-Diffusion Equation with Different Reactive Boundary Conditions

被引：6
|
作者：
Du, Rui [1 ]
Wang, Jincheng [2 ]
Sun, Dongke [3 ]
机构：
[1] Southeast Univ, Sch Math, Nanjing 210096, Peoples R China
[2] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China
[3] Southeast Univ, Sch Mech Engn, Nanjing 210096, Peoples R China
来源：
MATHEMATICS | 2020年 / 8卷 / 01期
基金：
中国国家自然科学基金;
关键词：
lattice Boltzmann method; mixed boundary condition; TRT model; FLUID; MODEL;
D O I：
10.3390/math8010013
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
We have tested the accuracy and stability of lattice-Boltzmann (LB) simulations of the convection-diffusion equation in a two-dimensional channel flow with reactive-flux boundary conditions. We compared several different implementations of a zero-concentration boundary condition using the Two-Relaxation-Time (TRT) LB model. We found that simulations using an interpolation of the equilibrium distribution were more stable than those based on Multi-Reflection (MR) boundary conditions. We have extended the interpolation method to include mixed boundary conditions, and tested the accuracy and stability of the simulations over a range of Damkohler and Peclet numbers.
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页码：1 / 12
页数：12
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