The JHU turbulence database [1] can be used with a state of the art visualisation tool [2] to generate high quality fluid dynamics videos. In this work we investigate the classical idea that smaller structures in turbulent flows, while engaged in their own internal dynamics, are advected by the larger structures. They are not advected undistorted, however. We see instead that the small scale structures are sheared and twisted by the larger scales. This illuminates the basic mechanisms of the turbulent cascade.

翻译：JHU 动荡数据库[1] 可以用先进的可视化工具[2] 来生成高质量的流体动态视频。 在这项工作中,我们调查了传统的观念,即动荡中较小的结构虽然有其自身的内部动态,但被较大的结构所渗透。然而,它们并不是不扭曲的。我们反而看到小型结构被大尺度的剪切和扭曲。这揭示了动荡级联的基本机制。