Development of advanced neutronics/thermal-hydraulics coupling simulation system, 1; Outline of advanced neutronics/thermal-hydraulics coupling simulation system

Kawanishi, Tomohiro; Nagaya, Yasunobu  ; Yoshida, Hiroyuki  ; Akie, Hiroshi  ; Tada, Kenichi   ; Ono, Ayako 

JAEA has started to develop the advanced neutronics/thermal-hydraulics coupling simulation system for improvement of the light water reactor analysis and safety. This simulation system uses a continuous energy Monte Carlo calculation code MVP and CFD calculation code TPFIT and JUPITER. The advanced system can treat rigorous bubble shape and it does not adopt the approximate expression and empirical formula. The advanced system will be a reference system for the current neutronics/thermal-hydraulics coupling simulation system. In this presentation, we show the outline of the advanced system.