[3G04-07] Advanced Simulation

[3G04] Development of Advanced Neutronics/Thermal-Hydraulics Coupling Simulation System

(2)Impact of the fine-scale void distribution in sub-channels on neutronics calculations

*Hiroshi Akie¹, Kenichi Tada¹, Ayako Ono¹, Yasunobu Nagaya¹, Hiroyuki Yoshida¹, Tomohiro Kawanishi¹ (1. JAEA)

Keywords:neutronics/thermal-hydraulics coupling simulation, MVP, JUPITER, TPFIT, numerical analysis

JAEA is developing the advanced neutronics/thermal-hydraulics coupling simulation system to improve the design and safety analysis of light water reactor. This presentation explains the impact of the fine-scale void distribution in sub-channels on fission rate (power) distribution.