| 矩形平板典型非定常拍动的三维效应 |
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| 引用本文： | 孙一峰,鲍麟,余永亮.矩形平板典型非定常拍动的三维效应[J].中国科学院研究生院学报,2010,27(1):1-9. |
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| 作者姓名： | 孙一峰 鲍麟 余永亮 |
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| 作者单位： | 中国科学院研究生院生物运动力学实验室,北京,100049 |
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| 基金项目： | 国家自然科学基金项目，中国科学院知识创新项目 |
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| 摘 要： | 用三维非定常面元法研究了不同展弦比矩形平板拍动的非定常气动响应.通过对矩形平板沉浮和俯仰2种基元运动的三维效应分析,得到如下结论:矩形平板非定常运动中,附加惯性效应影响了升力的瞬时值,其幅值随着展弦比的降低而减小,但时均值总为零;尾缘涡和侧缘涡作用是平均升力的来源,因矩形板在一个拍动周期内流向涡的方向发生改变,涡致升力的三维效应会随拍动非定常性增强而减弱.
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| 关 键 词： | 矩形平板 拍动 三维效应 非定常面元法 |
| 收稿时间： | 2009-05-08 |
| 修稿时间： | 2009-05-13 |
Three-dimensional effects of unsteady flapping rectangular plates |
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| SUN Yi-Feng,BAO Lin,YU Yong-Liang.Three-dimensional effects of unsteady flapping rectangular plates[J].Journal of the Graduate School of the Chinese Academy of Sciences,2010,27(1):1-9. |
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| Authors: | SUN Yi-Feng BAO Lin YU Yong-Liang |
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| Institution: | Laboratory for Biomechanics of Animal Locomotion, Graduate University of the Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | Aerodynamic responses of rectangular plates with different aspect ratios during flapping motion were simulated using a three dimensional unsteady panel code. The three-dimensional effects during plunging and pitching motions were then analyzed. The results demonstrated that the added mass only contributes to the instaneous lift force. The amplitudes of lift forces induced by added mass effects would decrease with a decreasing aspect ratio,but the time-averaged contributions were always zero. Vortices sheddi... |
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| Keywords: | rectangular plate flapping three-dimensional effects unsteady panel methods |
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