| 张钰,吕鹏,张俭,陈志敏*.基于三路舵机驱动的扑翼飞行模型气动特性研究[J].实验力学,2012,27(3):281~287 |
| 基于三路舵机驱动的扑翼飞行模型气动特性研究 |
| On the Aerodynamic Performance of Flapping Wing Model Based on Three Steering Gears |
| 投稿时间：2011-05-23 修订日期：2012-11-04 |
| DOI： |
| 中文关键词: 扑翼 压差传感器 烟风洞 数值模拟 |
| 英文关键词:flapping wing pressure difference transducer smoke wind tunnel numerical simulation |
| 基金项目: |
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| 中文摘要: |
| 扑动而形成非定常气动现象是扑翼飞行过程中产生高升力的主要原因。本文以Ellington实验的鹰蛾翅膀为原形,设计扑翼实验及数值计算模型。通过压差传感器对翅膀模型上翼面固定位置进行测压,分析前缘涡的产生及脱落情况 (考虑动压效应)。测量上下翼面固定位置处的压差,揭示扑翼飞行中产生高升力的主要原因。利用烟风洞观察扑翼模型周围流场结构及特殊涡产生变化情况。另外,根据Ellington提供的升力关系式估算了扑翼模型在一个周期内的平均升力。最后,基于三维欧拉方程对扑翼飞行气动特性进行数值模拟,计算结果与实验吻合良好。 |
| 英文摘要: |
| The unsteady aerodynamic phenomenon caused by flapping is the main factor to provide high lift for flapping flight. Taking hawkmoth's wing from Ellington experiment as the original model, authors designed the model for flapping wing experiment and numerical simulation. The pressure measurement on the upper flapping wing surface was operated at some special positions by pressure difference transducer to analyze the leading edge vortex (LEV) generation and shedding (considering the dynamic pressure effect). Then, the pressure difference on upper and lower flapping wing surfaces were measured at some special positions through the same pressure difference transducer to explore the main factor of high lift production. The flow structure and vortices developments were also observed in the low speed smoke wind tunnel. The mean lift of the flapping robot in a flapping cycle was estimated according to the lift estimation equation from Ellington. Finally, based on 3D Euler equations, the numerical simulation of this flapping robot is conducted to explore its aerodynamic performance. Numerical simulation results show a reasonable agreement with experimental results. |
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