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基于对现有黄蜂飞行观察实验的分析,建立了不同下扑和上挥时间非对称扑动悬停扑翼运动轨迹模型,并采用数值求解三维层流Navier-Stokes(N-S)方程的方法,研究了采用不同下扑和上挥时间比的仿生悬停扑翼气动特性.结果表明采用适当的时间非对称扑动可以增强悬停扑翼的气动性能.进一步通过对不同时间非对称扑动扑翼流场分析得出,采用时间非对称扑动不但可以增强使扑翼产生高升力的旋转环流机制,而且还可以增强扑翼表面涡流和展向流的强度,从而使扑翼具有更好的气动性能.
Based on the analysis of existing observations of wasp flight observations, the trajectory model of asymmetric flutter flapping-wing motion with different down-flutter and up-swing times was established and the numerical solution of three-dimensional laminar flow Navier-Stokes (NS) The aerodynamic characteristics of the bionic flapping flaps with different down-flighted and up-swing ratios were studied.The results show that the aerodynamic performance of the flapping-flapping flaps can be enhanced by using the appropriate time asymmetric flapping.Furthermore, Flow field analysis shows that the use of time asymmetric flutter can not only enhance the rotation of the flapping wing to produce high lift rotary circulation mechanism, but also can enhance the flapping wing surface flow and flow intensity, so that the flapping wing has better aerodynamic performance.