| LB方法的一个简单多速模型 |
| |
| 引用本文： | 李元香,陈炬桦,黄樟灿. LB方法的一个简单多速模型[J]. 计算物理, 1995, 12(4): 547-553 |
| |
| 作者姓名： | 李元香 陈炬桦 黄樟灿 |
| |
| 作者单位： | 武汉大学软件工程实验室, 武汉 430072 |
| |
| 基金项目： | 计算物理实验室开放基金;武汉市"晨光计划"资助 |
| |
| 摘 要： | 研究一个简单的二维三速格子Boltzmann模型。将微观的离散模型与宏观的连续统模型相结合,以宏观的流体力学方程作为约束条件确定局部平衡分布函数。运用Chapmann-Enskog展开法和多尺度技术导出Euler方程和Navier-Stokes方程以及模型的粘性系数表达式。
|
| 关 键 词： | 格子Boltzmann方法 Navier-Stokes方程 空腔流问题 |
| 收稿时间： | 1994-07-05 |
| 修稿时间： | 1995-03-07 |
A SIMPLE MULTI-SPEED MODEL OF LB METHOD |
| |
| Li Yuanziang,Chen Juhua,Huang Zhangchan. A SIMPLE MULTI-SPEED MODEL OF LB METHOD[J]. Chinese Journal of Computational Physics, 1995, 12(4): 547-553 |
| |
| Authors: | Li Yuanziang Chen Juhua Huang Zhangchan |
| |
| Affiliation: | Laboratary of Software Engineering, Wuhan University, Wuhan 430072 |
| |
| Abstract: | A simple two-dimensional lattice Boltzmann model with three speeds is studied. The local equilibrium distribution functions are determined under the restrained conditions of fluid dynamics by connecting the discrete model with the continuum macro-models. Euler equation and Navier-tokes equation are derived by using Chapman-Enskog expansion and multi-scalar technique, and the viscosity formula is also provided.The model has been applied to cavity flow problem with satisfactory results. |
| |
| Keywords: | Lattice Boltzmann method Navier-Stokes equation cavity flow problem |
|
| 点击此处可从《计算物理》浏览原始摘要信息 |
|
点击此处可从《计算物理》下载全文 |
