### 一种滤波SST方法在翼型深失速模拟中的应用

1. 1. 西北工业大学 航空学院, 陕西 西安 710072;
2. 中国航空研究院, 北京 100012
• 收稿日期:2012-05-28 修回日期:2012-07-26 出版日期:2013-05-25 发布日期:2012-08-23
• 通讯作者: 白俊强 男, 博士, 教授, 博士生导师。主要研究方向: 设计空气动力学, 非定常空气动力学, 工程湍流模拟。 Tel: 029-88492694 E-mail: junqiang@nwpu.edu.cn E-mail:junqiang@nwpu.edu.cn
• 作者简介:白俊强 男, 博士, 教授, 博士生导师。主要研究方向: 设计空气动力学, 非定常空气动力学, 工程湍流模拟。 Tel: 029-88492694 E-mail: junqiang@nwpu.edu.cn;张扬 男, 博士研究生。主要研究方向: 工程湍流模拟, 流动控制。 E-mail: iamvip2@163.com

### Application of Filter-SST Method in Airfoil Deep Stall Simulation

BAI Junqiang1, ZHANG Yang1, HUA Jun2

1. 1. School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China;
2. Chinese Aeronautics Establishment, Beijing 100012, China
• Received:2012-05-28 Revised:2012-07-26 Online:2013-05-25 Published:2012-08-23

Abstract:

To improve the calculation precision of the original shear stress transport (SST) two-equation turbulence model, the filter factor of the large eddy simulation (LES) and SST formula are combined. The computation zone is splitted by the filter factor, through which a stable flow near the wall is controlled by the turbulence model while the flow far from the wall is simulated by LES. The advantage of this method in comparison with the classic hybrid RANS/LES methods is that the filter can be chosen without depending on grid scale, resulting in a decrease of the probability of grid induced separation. The deep stall of NACA0021 airfoil is simulated by using the filter SST, unsteady Reynolds-averaged Navier-Stokes (URANS) and SST-DES. The simulation result demonstrates that the impulse in the separated region can be effectively activated by the filter SST method. The phenomenon shows the three dimension characteristics of separation. Meanwhile,the result of the test case is more precise than that obtained by the URANS method and it matches well with the result obtained by experiment.