On the Analysis and Evaluation of Direct Containment Heating with the Multidimensional Multiphase Flow Code MC3D

Figure 1

Example of 3D test calculation geometry with a fine mesh, showing the main volumes and flow paths, for the DISCO-F geometry. 1 reactor pressure vessel, 2 reactor cavity, 3 reactor pit access, 4 pit niche, 5 annular space, 6 exit to containment, 7 exit to subcompartments.