Premixing of corium into water during a fuel-coolant interaction: the models used in the 3 field version of the MC3D code and two examples of validation on billeau and faro experiments.

摘要

This paper presents the Triphasic application of the multiphasic 3D computer code MC3D. This application is devoted to the premixing phase of a Fuel Coolant Interaction (FCI) when large amounts of molten corium flow into water and interact with it. A description of the new features of the model is given (a more complete description of the full model is given in annex). Calculations of Billeau experiments (cold or hot spheres dropped into water) and of a FARO test ( true corium dropped into 5MPa saturated water) are presented.