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首页> 外文期刊>Experiments in Fluids: Experimental Methods and Their Applications to Fluid Flow >Dynamic behavior of the vortex ring formed on a butterfly wing
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Dynamic behavior of the vortex ring formed on a butterfly wing

机译：蝴蝶翼上形成的涡流环的动力学行为

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摘要

Micro-air-vehicles (MAVs) and micro-flight robots that mimic the flight mechanisms of insects have attracted significant attention in recent years. A number of MAVs and micro-flight robots that use various devices have been reported. However, these robots were not practical. One of the reasons for this is that the flying mechanism of insects has not yet been clarified sufficiently. In particular, the dynamic behavior of the vortex formed on the insect wing and its growth process have not been clarified. The purpose of the present study is to clarify the dynamic behavior and the detailed structure of the vortices of the flapping butterfly wing. The authors conducted a particle image velocimetry measurement around the flapping butterfly wing of Cynthia cardui and Idea leuconoe and investigated the vortex structure of the wing and its dynamic behavior. A vortex ring is formed over the butterfly wings when the wings flap downward to the bottom dead position. The vortex ring then passes over the butterfly completely and grows until reaching the wake at the bottom dead position. The vortex ring is formed over the wings regardless of the type of butterfly, although the scale of the vortex ring varies with the butterfly type.
机译：近年来，模仿昆虫飞行机制的微型飞行器（MAV）和微型飞行机器人引起了极大的关注。据报道，许多使用各种设备的MAV和微型飞行机器人。但是，这些机器人并不实用。原因之一是昆虫的飞行机理尚未充分阐明。特别是，尚未阐明在昆虫翅膀上形成的涡旋的动态行为及其生长过程。本研究的目的是弄清扑翼蝶翼的动力学行为和旋涡的详细结构。作者对Cynthia cardui和Idea leuconoe拍动的蝴蝶翅膀周围进行了粒子图像测速测量，并研究了翅膀的涡旋结构及其动态行为。当蝶形翼片向下拍打至下止点位置时，在蝶形翼片上形成涡流环。然后，涡流环完全越过蝶形，并生长直至到达下死点的尾流。旋涡环形成在机翼上方，与蝶形无关，尽管旋涡环的大小随蝶形而变化。

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