Full Core TREAT Kinetics Demonstration Using Rattlesnake/BISON Coupling Within MAMMOTH

Ortensi, Javier¹  DeHart, Mark D.¹  Gleicher, Frederick N.¹  Wang, Yaqi¹  Alberti, Anthony L.²  Palmer, Todd S.² 

[1] Idaho National Lab. (INL), Idaho Falls, ID (United States);Oregon State Univ., Corvallis, OR (United States)

关键词: Kinetics;    MAMMOTH;    Modeling;    MOOSE;    NEAMS;    Simulation;    TREAT;   

DOI  :  10.2172/1261006
RP-ID  :  INL/EXT--15-36268
PID  :  OSTI ID: 1261006

学科分类：数学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

This report summarizes key aspects of research in evaluation of modeling needs for TREAT transient simulation. Using a measured TREAT critical measurement and a transient for a small, experimentally simplified core, Rattlesnake and MAMMOTH simulations are performed building from simple infinite media to a full core model. Cross sections processing methods are evaluated, various homogenization approaches are assessed and the neutronic behavior of the core studied to determine key modeling aspects. The simulation of the minimum critical core with the diffusion solver shows very good agreement with the reference Monte Carlo simulation and the experiment. The full core transient simulation with thermal feedback shows a significantly lower power peak compared to the documented experimental measurement, which is not unexpected in the early stages of model development.