| 翼型厚度对气动弹性特性的影响 |
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| 引用本文： | 叶正寅, 谢萌. 翼型厚度对气动弹性特性的影响[J]. 力学与实践, 2009, 31(3): 27-30. doi: 10.6052/1000-0879-2008-366 |
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| 作者姓名： | 叶正寅 谢萌 |
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| 作者单位： | 西北工业大学航空学院 |
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| 基金项目： | 国家自然科学基金资助项目(10572120) |
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| 摘 要： | 结合基于$k$-$omega$的SST两方程湍流模型，求解雷诺平均Navier-Stokes方程获得定常和非定常气动力，耦合翼型弹性运动方程，在时间域内模拟了不同厚度对称翼型在不同迎角下的气动弹性动态过程，并重点研究了较大迎角下的不同厚度翼型流场特征和气动弹性的性质，研究结果表明：在论文所涉及的参数情况下，对于迎角从零到大迎角范围，翼型颤振临界速度随迎角的变化不是单调的. 翼型颤振临界速度迅速下降的起始迎角比最大升力系数对应的迎角小很多.
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| 关 键 词： | 气动弹性 分离流 失速 颤振 |
| 收稿时间： | 2008-07-23 |
| 修稿时间： | 1900-01-01 |
THE EFFECTS OF AIRFOIL THICKNESS ON AEROELASTIC CHARACTERISTICS |
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| THE EFFECTS OF AIRFOIL THICKNESS ON AEROELASTIC CHARACTERISTICS[J]. Mechanics in Engineering, 2009, 31(3): 27-30. doi: 10.6052/1000-0879-2008-366 |
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| Authors: | YE Zhengyin XIE Meng |
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| Affiliation: | 2;National Key Laboratory of Aerodynamic Design and Research;NWPU;Xi'an 710072;China |
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| Abstract: | Based on the Reynolds-Averaged Navier-Stokes equationsand $k$-$omega $ SST turbulent models, the steady and unsteady flows arecomputed. Coupled with the motion equations for an elastic supportedairfoil, the aeroelastic dynamic responses of the symmetric airfoil withdifferent thicknesses at different incidences are simulated in the timedomain. The flow-field characteristics and the aeroelastic characteristicsof airfoil with different thicknesses at high-incidence are investigated. Itis shown that, the critical flutter speed does not vary monotonously withthe incidence increasing from zero to high levels for various Reynolds numbersand structure parameters considered in this paper. The incidence at whichthe critical flutter speed begins to drop rapidly is much smaller than theincidence corresponding to the maximum lift coefficient. |
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| Keywords: | aeroelastics separated flow stall flutter |
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