| 基于层流动能湍流模型的数值模拟方法 |
| |
| 引用本文： | 甘文彪,周洲. 基于层流动能湍流模型的数值模拟方法[J]. 计算物理, 2013, 30(2): 169-179 |
| |
| 作者姓名： | 甘文彪 周洲 |
| |
| 作者单位： | 西北工业大学 无人机特种技术重点实验室, 西安 710065 |
| |
| 基金项目： | 国家自然科学基金(11202162);国家"863"预研基金(9140A25010312HK0301)资助项目 |
| |
| 摘 要： | 从层流动能出发提出数值模拟原则;综合考虑自然、旁路和分离流转捩的因素构建实用的层流动能湍流模型,结合预处理和基本求解技术发展出适于转捩流动的数值模拟方法和程序.针对预处理技术,以Weiss-Smith矩阵为基础,考虑湍流粘性的影响;针对基本离散格式和边界条件,结合模型方程进行对角占优强化等特殊处理.最后通过平板边界层和典型翼型,特别是低雷诺数翼型的数值模拟,验证数值方法的有效性和鲁棒性.算例表明本文的方法能够为求解更复杂的流动提供参考.
|
| 关 键 词： | 层流动能湍流模型 转捩 低雷诺数 预处理技术 翼型 |
| 收稿时间： | 2012-05-21 |
| 修稿时间： | 2012-10-14 |
Reynolds-averaged Navier-Stokes Method with Laminar Kinetic Energy Turbulent Model |
| |
| GAN Wenbiao,ZHOU Zhou. Reynolds-averaged Navier-Stokes Method with Laminar Kinetic Energy Turbulent Model[J]. Chinese Journal of Computational Physics, 2013, 30(2): 169-179 |
| |
| Authors: | GAN Wenbiao ZHOU Zhou |
| |
| Affiliation: | Science and Technology Key Laboratory on UAV, Northwestern Polytechnical University, Xi'an 710065, China |
| |
| Abstract: | We set up simulation principles,and build simulation method and codes with laminar kinetic energy turbulent model,in which natural,bypass and separation translation are considered.Time derivatives of three-dimensional Navier-Stokes equations are preconditioned with Weiss-Smith preconditioning matrix.Effect of turbulent eddy viscosity is considered.Time split,spatial split and boundary conditions are specially treated to diagonal dominant matrix.Boundary layer and airfoil flow simulations are available.It is shown that the method is efficient and robust for basic aerodynamic flows.It provides reference to more complex flows. |
| |
| Keywords: | laminar kinetic energy turbulent model transition lower Reynolds preconditioning technique airfoil |
|
| 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 |
