Droplet [simFlow]

Problem description

In this section we will perform a 2D simulation of a water droplet falling into a water pool.This is a multiphase analysis; we will use interFoam solver.

Mesh generation

We start by creating a bigger domain and refine the regions where the water droplet will be present:

The resulted mesh:

In yellow is the initial geometry of the droplet.

Boundary conditions and initial fields

The front and back BCs are set to empty in order to make the analysis 2D; all others boundary conditions are set to wall to keep the water inside the domain.

Case control

Results

During the run, the residuals are plotted:

The falling droplet disturbs the free surface of the water at impact; the first plot is colored by the velocity and the second by pressure.

Given that we applied gravitation acceleration, the pressure varies with the depth (hidrostatic pressure).