Figure 1: Formation of a vortex ring during drop impact. | Nature Communications

Figure 1: Formation of a vortex ring during drop impact.

From: Origin and dynamics of vortex rings in drop splashing

Figure 1

(a) Illustration of the vortex ring formation during drop impact on a pool surface. (b) Schematic of X-ray imaging coupled with the experimental set-up for the drop impact. (c) Sequential X-ray images (of the red square in a) in ethanol drop impact (with diameter 1.9 mm) from 80 mm height showing a positive vortical flow (Supplementary Movie 1). The interfacial boundaries between the drop fluid (dark contrast) and pool fluid are clearly resolved in a high temporal resolution. Scale bar, 100 μm long.

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