We did a simulation of foam on water [1]
using the open-source solver Aphros [2]
and visualized using ParaView with the Intel OSPRay backend for path tracing.
It took 20 hours on 14000 cores of the Piz Daint supercomputer.[1] https://www.youtube.com/watch?v=0Cj8pPYNJGY
[2] https://github.com/cselab/aphros