Cabaret-Sc1 Code Validation in Experiments on Hydrogen Explosion Safety at NPP

The mathematical models implemented in the CABARET-SC1 code are described and the code validation results characterizing its potential in the description of key processes influencing hydrogen propagation in the reactor containment in the course of a severe accident are presented. Agreement with experimental data was achieved by refining the computational grids and adding a radiative heat-transfer model with no adjustable parameters or semi-empirical models.