Fig. 6: Internal flow profile.
From: Equivalence of sessile droplet dynamics under periodic and steady electric fields

The velocity field inside the sessile droplet under AC field at t = 39.25Tp. a ε = 2, σ = 20, and b ε = 10, σ = 2. The remaining parameters are Ω = π/50 and Oc = 10. The equilibrium shape of the droplet without an electric field (dashed curve) is used as the initial condition.