Elastic
turbulence with ink
Elastic turbulence visualized with ink. Snapshots of mixing in the flow between two plates were made in consecutive moments of time. The rotating upper plate was white. The flow was illuminated and photographed through the transparent stationary lower plate. A droplet of ink was placed in the center, and the rotation was started at t = 0. The upper plate rotated at one revolution per 6 seconds, corresponding to the Weissenberg number of 13. Transition to the elastic turbulence occurred within the first 60 seconds, and after 8 minutes the ink was rather well mixed.
Elastic turbulence visualized with ink. Snapshots of mixing in the flow between two plates were made in consecutive moments of time. The rotating upper plate was white. The flow was illuminated and photographed through the transparent stationary lower plate. A droplet of ink was placed in the center, and the rotation was started at t = 0. The upper plate rotated at one revolution per 6 seconds, corresponding to the Weissenberg number of 13. Transition to the elastic turbulence occurred within the first 60 seconds, and after 8 minutes the ink was rather well mixed.
