THE DISINTEGRATION OF VORTEX RINGS

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Abstract
The mechanism by which a mature ring is obliterated as it collides with a plane, rigid surface parallel to the plane of the ring is inferred from photographic sequences. The absence of turbulent mixing at the surfaces demarcating the layers makes it possible to trace the deformations throughout the entire process. The predominant feature of the changing geometry is the sharpness of the bounding surfaces. The violent disintegration process is not only interesting in its own right, but information regarding the nature and structure of the layers and the ring itself is obtained from an examination of the events leading to its destruction.
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