Role of similitude in the design of LMFBR safety-related simulation experiments

In this paper we examine the implications of scaling in the design of simulation experiments for two major areas of fast reactor safety research - the transition phase and postdisassembly energetics. Specific scaling requirements and compatible experimental designs are formulated and compared with ongoing programs having similar objectives. Suggestions are also outlined for future out-of-pile experimental research

Simulant-material experimental investigation of flow dynamics in the CRBR Upper-Core Structure

The results of a simulant-material experimental investigation of flow dynamics in the Clinch River Breeder Reactor (CRBR) Upper Core Structure are described. The methodology used to design the experimental apparatus and select test conditions is detailed. Numerous comparisons between experimental data and SIMMER-II Code calculations are presented with both advantages and limitations of the SIMMER modeling features identified