Turning flight simulations of a dragonfly-like flapping wing-body model by the immersed boundary-lattice Boltzmann method
Turning flight simulations of a dragonfly-like flapping wing-body model by the immersed boundary-lattice Boltzmann method
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DOI：
10.1088/1873-7005/aad78c
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发表时间：
2018-12-01
影响因子：
1.5
通讯作者：
Inamuro, Takaji
中科院分区：
文献类型：
--
作者：
Hino, Harunari;Inamuro, Takaji
采用浸没边界-格子Boltzmann方法对蜻蜓扑翼模型的六自由度转弯飞行进行了数值研究。该问题的控制参数是雷诺数Re、弗劳德数Fr和无量纲质量m，我们将这些参数设置为Re=200、Fr=15和m=51。首先，为了右转，我们模拟了模型在较小的左翼冲程角度和较大的右翼冲程角度下的自由飞行。我们发现模型向右旋转，并绕体轴顺时针旋转。其次，为了恢复机身在水平位置的滚转角，我们尝试通过改变左右翅膀的拍动周期来控制模型的滚转运动。最后，利用上述结果，我们尝试通过动态改变左右翼的拍打角度和拍打周期来模拟转弯飞行。通过简单地控制左右翼的拍打角度和拍打周期，即可成功模拟转弯飞行。
Turning flights of the dragonfly-like flapping wing-body model in six degrees of freedom are numerically investigated by using the immersed boundary-lattice Boltzmann method. The governing parameters of the problem are the Reynolds number Re, the Froude number Fr, and the non-dimensional mass m. We set the parameters at Re = 200, Fr = 15, and m = 51. First, for making a right turn, we simulate a free flight of the model with a smaller stroke angle of the left wing and a larger stroke angle of the right wing. We find that the model turns to the right and rotates clockwise around the body axis. Secondly, in order to recover the roll angle of the body in a horizontal position, we try to control the roll motion of the model by changing the flapping periods of the left and right wings. Finally, using the above results we try to simulate the turning flight by dynamically changing the stroke angles and the flapping periods of the left and right wings. The turning flight can be successfully simulated by a simple control of the stroke angles and the flapping periods of the left and right wings.