蝶の翅が生み出す非定常流体力特性

抄録

A typical example of the flow field around a moving elastic body is that around butterfly wings, which contain many veins and can undergo elastic deformation. In recent years, quantitative flow visualization techniques, such as Particle Image Velocimetry (PIV) measurement, have advanced rapidly, and the flow fields around insect wings have been actively investigated using such techniques. The characteristics of the dynamic forces generated by the flapping insect wing have attracted a great deal of attention. However, the characteristics of dynamic forces generated by the flapping insect wing are not yet sufficiently understood. The purpose of the present study is to investigate the characteristics of dynamic lift generated by the flapping butterfly wing. We measured the dynamic lift produced by a flapping butterfly, using a six-axes sensor. The sixaxes sensor was synchronized with a high speed camera to capture the flapping motion of the wing, and the dynamic lift was related to the flapping motion of the butterfly wing.