直接计算压力场的Lattice Boltzmann模型

基金项目: 国家自然科学基金资助项目(500090087)

详细信息

Direct Calculation of Pressure by Lattice Boltzmann Model

College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China

Funds: The Project is Supported by National Natural Science Fund of China(No.50009007).

摘要: 简要介绍了Lattice Boltzmann(LB)方法的基本原理和常用的二维LB模型,指出其压力场直接计算的优点,并给出一种改进的使压力计算更方便的LB模型,对恒定和非恒定圆柱绕流的压力场进行模拟,与文献中已有结果作了比较和分析,表明计算压力的LB方法具有正确、简单等优越性.
- 流场 /
- LatticeBoltzmann方法 /
- 模拟 /
- 压力
Abstract: The basics and the d2q9 (two-dimensional nine-point) model of the lattice Boltzmann method are introduced, and the advantage of its direct pressure calculation is demonstrated.A more efficient model for simulating pressure fields, namely d2q9p, an improved version of d2q9, is presented.Using the model, 2-D steady and unsteady viscous flows past a circular cylinder are simulated.Good agreement between results of the LB and those of other methods shows that LB method is a simple, efficient and accurate approach to simulate pressure fields.
- flow field /
- Lattice Boltzmann method /
- simulation /
- pressure

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