| Popis: |
The in-vessel thermal-hydraulic analysis of the EBR-II Pool Reactor for Transient Test No. 10, Phase 2, has been performed using the COMMIX-1A computer code. The analysis includes all reactor components inside the reactor vessel. COMMIX-1A employes the porous-media formulation in which the concepts of volume porosity, surface permeability, and distributed resistance and heat osurce are used to model the internal structures. The governing equations of conservation of mass, momentum, and energy are solved as a boundary problem in space and as an initial-value problem in time. This report presents the steady-state and transient in-vessel thermal-hydraulic results of the EBR-II natural-circulation simulation. Comparisons show close agreement between computational and experimental data. The phenomenon of reversed flow in the low-pressure plenum, which was observed during the EBR-II transient test, is confirmed by the simulation. |
