Coupling of CUPID and nTER for Pin-by-Pin Subchannel Thermal-Hydraulics and Neutronics Analysis

摘要

Since the multi-physical phenomena related to nuclear reactor safety have become critical issues, the computational tools have been developed for high fidelity multi-physics simulation. In this study, two-phase transient analysis code, CUPID, and whole core neutron transport code, nTER were coupled and three-dimensional pin-by-pin analysis was progressed against the quarter core of OPR1000. Using the simple operating splitting approach along with fixed-point iteration, the converged results were obtained under steady-state condition. For future work, the CUPIDTER coupling simulation would be performed against other problems such as VERA Core Physics Benchmark and APR 1400 reactor core. Furthermore, an advanced numerical algorithm to accelerate global convergence would be implemented.