Fig. 5: Time evolution of the displacement Δzcm and Δycm of the cores.
From: The vortex-driven dynamics of droplets within droplets
On the left axis Δzcm(i) = zcm(i)−zcm(O) (red/plusses and blue/crosses) and on the right axis Δycm(i) = ycm(i)−ycm(O) (pink/asterisk and cyan/squares) of the two cores. They are calculated with respect to the center of mass of the external droplet. The inset shows the typical trajectories of the cores during a cycle. Red and blue arrows indicate the direction of rotation of droplets 1 and 2, respectively. Snapshots are taken at t = 5.54 × 105 (a), t = 6.3 × 105 (b), t = 7.5 × 105 (c), and t = 8.16 × 105 (d). Multiplication by a factor 105 is understood for the simulation time t on the horizontal axis. This applies to all plots in the paper.
