Rebound behaviors of droplets impacting on a superhydrophobic surface

Heterogeneous droplets in contact

“…The phase diagram extends the phase diagram for isothermal droplet deposition (Ste = 0), determined experimentally by Ref. [67]. For the isothermal case, the simulated results agree reasonably well with previously obtained results.…”

“…For the isothermal case, the simulated results agree reasonably well with previously obtained results. A transition from the deposition to rebound is seen between 0.5 < We < 2, when the remaining kinetic energy in the droplet is sufficiently high to overcome surface and potential energy [67]. A transition into the rebound with ejection regime, when even higher kinetic energy remains in the retracting droplet, is seen between 11 < We < 13.5 here and at We = 14 in the experiments by Ref.…”

“…A transition into the rebound with ejection regime, when even higher kinetic energy remains in the retracting droplet, is seen between 11 < We < 13.5 here and at We = 14 in the experiments by Ref. [67]. The slight difference might be due to the slightly lower contact angle of 150°in the experiments.…”

“…• First, at slight surface undercooling, 0.1 < Ste < 0.4, similar to isothermal impact, for We < 4, complete deposition of the droplet on the surface takes place. This happens at We < 2 in the isothermal case [67]. There is not enough inertia for (partial) re-bounce to occur.…”

Analysing the Motions of Spray Droplets on a Cow’s Surface to Relieve Heat Stress

“…To date, much work has been conducted on the crushing characteristics of a droplet hitting a wall 5–7 . Researchers have studied the spreading movement of a single droplet through experimental phenomena and numerical simulations 8–10 . Rioboo 11 et al .…”