Assessment of a new model for the investigation of an hypothetical SGTR accident in LFR reactors

Steam generator tube ruptures are one of the accidents that may happen in a lead-cooled fast reactor and its computational analysis foresees the presence of several numerical challenges. The EUROPLEXUS code, developed by the CEA and the JRC, provides an energy-conserving model that can be used to study such kind of phenomena. In this work, the comparison between the latter and a new entropy-conserving model is presented, along with its improvements and its limits.