Control Assembly Modeling with the Nodal Equivalence Theory in Sodium-Cooled Fast Reactor

摘要

In a heavily rodded SFR core, the simple two-step diffusion theory cannot provide accurate solutions since the few-group constants in the control assembly region are not properly determined. In this work, we have shown that the conventional nodal equivalence theory can be successfully applied to the control assembly homogenization in SFR and accurate nodal analysis can be done for the SFR core.