Sustainable development of case setups in OpenFOAM_RCS

Due to the growing importance of Computational Fluid Dynamics (CFD) for reactor safety research, there have been activities aimed at qualifying the associated methods for many years. This entails the development and validation of models on the basis of detailed experimental data, generated in comprehensive projects. There was and is a need for development, among other things, for multiphase flows, in particular for accident scenarios in the reactor coolant system (RCS). In order to be able to use the model developments and validation data generated throughout the various projects funded by the German Federal Ministry for Economic Affairs and Energy in the long term, these are carried out using the reference code OpenFOAM, which is thereby qualified for application. The OpenFOAM_RCS project includes the OpenFOAM_RCS Addon for the C++ library OpenFOAM from the OpenFOAM Foundation, which gathers additional software that is relevant for the simulation of the reactor cooling system. This entails solvers, physical models, functionObjects, boundary conditions as well as pre- and post-processing utilities. The associated simulation setups are maintained along with the code.