Hydrogen Mixing in a Closed Containment Compartment Based on a 1-D Model with Convective Effects. Final Report

摘要

A transient one-dimensional finite-difference model was developed to determine the hydrogen concentration variation with position in a closed containment compartment due to radiolysis following a LOCA. The model includes mixing due to molecular and eddy diffusion and natural convection. For representative compartments, the maximum hydrogen concentration difference between the bottom and top of the compartment never exceeds 0.25 volume percent when all three mixing mechanisms are considered for a range of parameters. (ERA citation 05:036691)