Ex-vessel fuel-coolant interaction
-Role of void in steam explosions as calculated with MC3D and IDEMO computer codes,
-Void build-up in fuel-coolant premixing phase,
-Solidification / material effect: comparison of model currently developed for MC3D code, and characterization of the influence of the material effect on melt solidification,
-Preliminary calculations for a fuel-coolant interaction test in the DISCO (KIT, Germany) experimental facility.
Benchmarks on containment issues
Several benchmarks between codes have started:
| - | On containment sprays, consisting in simulation of elementary heat and mass transfer experiments (IRSN, France, organizing; 10 participants): separate uniform droplets were injected into a vessel with a controlled atmosphere. |
| - | On hydrogen combustion (IRSN organizing; 8 participants): simulation of experiments in the ENACCEF facility (CNRS, Orléans, France). |
| - | On steam condensation (University of Pisa, Italy, organizing; 14 participants): simulation of experiments in the CONAN facility (University of Pisa). |
| - | On development of a generic containment model (FZ Jülich, Germany, organizing; 12 participants). The purpose is to compare code results by simulating a transient in a precise and unique containment model, based on the containment of a German nuclear power plant. |
| - | On Passive Autocatalytic Recombiner (PAR) interaction with containment atmosphere (GRS, Germany, organizing; 10 participants): simulation of two experiments using PARs in the THAI facility (Becker Technologies, Germany). |
Hydrogen combustion under Direct Containment Heating conditions
Experiments in a large-scale experimental facility (200 m3 volume) are being prepared, which includes simulations and analysis of results.
(Experimental facility at KIT for DCH experiments)
Contact: Ivo Kljenak, ivo.kljenak@ijs.si