| 基于Lattice Bohzmann方法的翼型绕流数值模拟 |
| |
| 引用本文： | 张勇,钟诚文.基于Lattice Bohzmann方法的翼型绕流数值模拟[J].航空计算技术,2006,36(3):111-114. |
| |
| 作者姓名： | 张勇 钟诚文 |
| |
| 作者单位： | 1. 西北工业大学,航空学院,翼型、叶栅空气动力学国防科技重点实验室,陕西,西安,710072;中国人民解放军96215部队,广西,柳州,545000
2. 中国人民解放军96215部队,广西,柳州,545000 |
| |
| 摘 要： | 将通过物理平面的结构化C型贴体网格变换到计算平面的均匀正交网格,引入非均匀网格插值方法,采用基于Lattice-Boltzmann方程的D2Q9模型,对低雷诺数下的NACA0012翼型绕流进行了数值模拟,对五个不同位置的边界层速度型与基于有限体积法的CFL3D程序的结果进行了比较.结果表明,两种方法的计算结果一致.改进后的Lattice-Boltzmann方法适用于曲边边界,非均匀网格,同时对计算速度影响不大.Lattice-Boltzmann方法计算较简单,因而用LB方法来模拟翼型绕流是一种新的选择,并可应用于更复杂的低雷诺数流动中.
|
| 关 键 词： | Lattice Boltzmann 非均匀 贴体网格 低雷诺数 翼型 |
| 文章编号： | 1671-654X(2006)03-0111-04 |
| 修稿时间： | 2006年4月10日 |
Simulation of Flow Around an Airfoil by the Lattice Boltzmann Method |
| |
| ZHANG Yong,ZHONG Cheng-wen.Simulation of Flow Around an Airfoil by the Lattice Boltzmann Method[J].Aeronautical Computer Technique,2006,36(3):111-114. |
| |
| Authors: | ZHANG Yong ZHONG Cheng-wen |
| |
| Abstract: | The Lattice Boltzmann Method(LBM) is based on microscopic particle models and kinetic equations to recover macroscopic Navier-Stokes equations.In this paper,simulations of the flow around an airfoil(NACA0012) using LBM are carried out.Originally,LBM is an incompressible flow solver on orthogonal coordinates.In order to resolve the boundary layer around the airfoil accurately,the algorithm is extended to body-fitted grid(C-grid) in generalized coordinates.Suitable wall boundary condition is introduced for generalized coordinates.The velocity profile of the boundary layer is compared in detail with the finite volume method(CFL3D) results and consistent results are obtained.The present LBM is validated at relatively low Reynolds number(Re=500). |
| |
| Keywords: | Lattice Boltzmann non-uniform body-fitted mesh low reynolds number airfoil |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
