The three-day workshop includes a presentation of the basic and advanced OpenFOAM usage, with explanation of programming of new sets within the framework. The basic part includes steps of making a mesh, setting boundary / initial conditions, running the problem on the HPC system and reviewing the results. The advanced part covers more complex cases with advanced application usage. What is not covered in the OpenFOAM can be upgraded within the software environment with implementation of your own code. Showcases and hands-on cases will be presented.