Artificial Muscle Research Center, Konkuk University, Gwangjin-gu, Seoul 143-701, Republic of Korea.
J Theor Biol. 2009 Oct 21;260(4):523-30. doi: 10.1016/j.jtbi.2009.07.015. Epub 2009 Jul 23.
We investigate the aerodynamic performance of the dragonfly wing, which has cross-sectional corrugation, via a static 2-dimensional unsteady simulation. Computational conditions are Re=150, 1400, and 10,000 with angles of attack ranging from 0 degrees to 40 degrees . From the computational results, lift coefficients are increased by the wing corrugation at all Reynolds number. However, the corrugation has little influence on the drag coefficients. The flows such as vortex in the valley of corrugation and near the edge of the corrugation are locally different from those of an elliptic wing. However, such local flows have little influence on the time averaged wing performance. From the numerical experiment presented in this study, it is determined that suction side corrugations of the wing have very little influence on increase of the lift coefficient at a positive angle of attack.
我们通过二维定常非定常模拟研究了具有横截面波纹的蜻蜓翅膀的空气动力学性能。计算条件为 Re=150、1400 和 10000，攻角范围为 0 度至 40 度。从计算结果来看，在所有雷诺数下，机翼波纹都会增加升力系数。然而，波纹对阻力系数的影响很小。在波纹的山谷和波纹边缘附近的流动与椭圆形机翼的流动不同。然而，这种局部流动对机翼的时间平均性能影响很小。从本研究中的数值实验可以确定，在正攻角下，机翼的吸力侧波纹对升力系数的增加几乎没有影响。
