Coupled Neutronics/Thermal-Hydraulics Calculation of PBMR-400 Equilibrium Core

摘要

A major advantage of the computational approachrnused in this study is elimination of the need for precomputedrnparametric cross sections sets which may notrnrepresent the actual core composition and regionrndependent neutronic parameters. Approximations basedrnon unit cell calculations may not include thermalizationrneffects particularly near the inner and outer reflectorrnregions. Although the simplified thermal-hydraulic modelrnemployed is valid for steady state cases, more detailedrnmodels can be employed to the coupling methodology.