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. 2017 May 16;8:15326. doi: 10.1038/ncomms15326

Figure 2. Competing length scales control the transition to active turbulence.

Figure 2

(a) Phase-space of control parameters corresponding to the vortex-lattice state. The slope of 0.5 at the boundaries of the vortex-lattice state shows that the emergence of vortex lattice is controlled by two competing length scales: the channel height h and the activity length scale Inline graphic. (b) Transition from the vortex-lattice state to active turbulence is characterized by the channel-averaged enstrophy Inline graphic distribution for increasing values of activity number Inline graphic.