摘要
采用D2Q9和D2Q7离散速度模型,基于群在集合上的作用,给出相应离散速度集合的一个划分;利用对称变换群理论确定格子Boltzmann方法 (LBM)中平衡态分布函数的两种不同形式.通过基于不同离散速度模型的LBM平衡态分布函数的比较,更直观地描述平衡态分布函数形式的确定及其与离散速度模型的关系.
The D2Q9 and D2Q7 discrete-velocity models are used, and a division of the corre- sponding discrete-velocity set is given based on the role of the group in the set. At the same time, symmetry transformation group theory is used to determine the equilibrium distribution function of Lattice Bohzmann Method (LBM) in two different forms. Through the comparison based on the equilibrium distribution function of LBM under different discrete velocity models, the description of the determination of the form of equilibrium distribution function and its relationship with discrete ve- locity models is more intuitive.
出处
《福建师范大学学报(自然科学版)》
CAS
CSCD
北大核心
2014年第6期15-19,共5页
Journal of Fujian Normal University:Natural Science Edition
基金
国家青年科学基金资助项目(11301082)
福建省自然科学基金资助项目(2013J01006)
福建省教育厅资助项目(JA13069
JB13020)