三维机器鸟自主飞行的涡动力学分析与控制（英文）

Vorticity Dynamics and Control of Self-Propelled Flying of a Three-Dimensional Bird

鸟类通过翅膀的拍动和旋转运动提供飞行的驱动力和升力。本文研究了机器鸟翅膀的旋转幅度和旋转时间对飞行的状态影响,发现适当地选取这两个参数可以控制机器鸟在水平方向和竖直方向上的速度。本研究主要使用了两个工具:在不可压粘性流体中自主飞行的三维机器鸟和一个三维计算流体力学软件包,后者包含了浸入边界法(IBM)、体积函数法(VOF)、自适应多重网格有限体积法和游动与飞行的控制机制。

Birds are propelled and lifted by wings＇ flapping and rotating motion In this study,the rotation amplitude and rotation time interval of wings were studied,the self-propelled flying motion of a threedimentional（3D） bionic bird in a viscous flow is investigated numerically with a 3D computational fluid dynamics （CFD） package.The package includes the immersed boundary method （IBM）,the volume of fluid （VOF） method,the adaptive multi-grid finite volume method,and the swimming and flying control strategy.It is suggested that the bird can fly faster forward or upward with an appropriate rotation amplitude and rotation time interval.