反回転渦対の三次元挙動に関する可視化実験(乱流基礎(4),一般講演)

概要

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The three-dimensional instability, named Crow instability, occur in a counter-rotating vortex pair, namely contracting deformation, dislocation, break up, forming of vortex ring, and etc occur in a vortex pair by Crow instability. The purpose of this study is to visualize and analyze the three-dimensional behavior of a counter-rotating vortex pair. A counter-rotating vortex pair is generated as a trailing vortex of a delta wing, and then its vorticity increases and its size becomes small by the vortex stretching in the contraction part of a water channel. In this study, we reveal the relation between the three-dimensional behavior and the characteristics of a vortex pair by changing the characteristics of vortex pair (e.g. circulation, vorticity distribution, diameter of vortex core and etc).
日本流体力学会の論文
2008-09-04