You can find an extensive hands-on tutorial, courtesy of the ALCF PythonFOAM workshop, here: https://www.youtube.com/watch?v=-Sa2OEssru8 PODFoam/: A pimpleFoam solver ...
Research-driven development of a hybrid Eulerian–Lagrangian multiphase solver with phase change modeling, based on OpenFOAM. - Nz0130/openfoam-lagrangian-eulerian-multiphase ...