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双时间法求解大迎角翼型绕流非定常N-S方程
引用本文:宋文萍,杨永,乔志德,Pahlke.K. 双时间法求解大迎角翼型绕流非定常N-S方程[J]. 空气动力学学报, 1999, 17(4): 466-471
作者姓名:宋文萍  杨永  乔志德  Pahlke.K
作者单位:1. 西北工业大学,西安,710072
2. 德国宇航研究院
基金项目:德国教育,科学研究与技术部(收BMBF)资助
摘    要:本文采用双时间推进法、顶点格式有限体积法求解非定常NS方程、应用多层网格技术计算了NACA0012翼型大迎角振荡绕流,并对伪时间推进收敛精度,物理时间步长,多层网格迭代方式等对计算结果与计算CPU时间的影响进行了讨论,另外还讨论了采用Baldwin-Lomax湍流模型时用固定转捩或全湍流模式对计算结果的影响,并与实验结果进行了比较。

关 键 词:双时间推进法  有限体积法  非定常NS方程

Unsteady N-S Calculations Using a Dual-Time Stepping Method for Airfoils Oscillating at High Angle of Attack
Song Wenping,Yang Yong,Qiao Zhide,Pahlke.K. Unsteady N-S Calculations Using a Dual-Time Stepping Method for Airfoils Oscillating at High Angle of Attack[J]. Acta Aerodynamica Sinica, 1999, 17(4): 466-471
Authors:Song Wenping  Yang Yong  Qiao Zhide  Pahlke.K
Abstract:A dual time stepping method is used to solve the unsteady two dimentional Navier Stokes equations for the unsteady motion of airfoils oscillating at high angle of attack. Results obtained from single grid and multigrid calculations are given and compared with the experimental data. The influence of the magnitude of physical time step, the inner iteration tolerance, the different multigrid strategy, the position of the transition points are also discussed. The efficiency of present method is increased a great deal compared to explicit methods.
Keywords:dual time stepping method  finiti volume method  unsteady N S equations  
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