Coupled SPH-FV solver - Vortex Dipole beneath a free surface

Coupled SPH/FV simulation: Vortex Dipole beneath a free surface. Colors refer to the vorticity field.
SPH model is adopted only close to the free-surface (dashed box) whereas Finite Volume is adopted elsewhere.
Discretization: NSPH = 400, NFV =256. Domain decomposition adopted: Domain B.