| 翼型颤振分析的时域方法 |
| |
| 引用本文： | 田晓.翼型颤振分析的时域方法[J].科学技术与工程,2010,10(19). |
| |
| 作者姓名： | 田晓 |
| |
| 作者单位： | 北京航空航天大学能源与动力工程学院,北京,100191 |
| |
| 摘 要： | 使用全耦合法预测了翼型NLR7301的颤振边界.在流体域的动网格上,通过求解非定常的雷诺平均N-S方程,计算出翼型表面的非定常气动力.在耦合了翼型的结构动力学方程后,得到翼型表面的变形位移,通过变形网格技术对流体域的网格进行更新.在此基础上利用时间推进的方法模拟了翼型的自激振动过程.
|
| 关 键 词： | 非定常流动 颤振 气动弹性 |
| 收稿时间： | 4/9/2010 5:29:23 PM |
| 修稿时间： | 4/19/2010 8:04:54 PM |
The Time Domain Aeroelastic Analysis of Airfoil Flutter |
| |
| tianxiao.The Time Domain Aeroelastic Analysis of Airfoil Flutter[J].Science Technology and Engineering,2010,10(19). |
| |
| Authors: | tianxiao |
| |
| Abstract: | A fluid/structure coupled method is developed to predict the flutter boundary of NLR7301 airfoil. In the aerodynamics domain, the time-dependant aerodynamic force on the surface of the airfoil is computed by solving the unsteady Reynolds averaged Navier-Stokes equation. Coupled with a structure dynamics equation of the airfoil, the surface displacement of the airfoil is computed. With a dynamic mesh-deformation technique, the interior nodes of the CFD grid is moved accordingly in order to reflect the motion of the airfoil surface, thus the time history of the airfoil self-excited vibration is simulated. |
| |
| Keywords: | unsteady flow flutter aeroelasticity |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《科学技术与工程》浏览原始摘要信息 |
| 点击此处可从《科学技术与工程》下载免费的PDF全文 |
|
