This work deals with the validation of a high-fidelity multiphysics system coupling the Serpent 2 Monte Carlo neutron transport code with SUBCHANFLOW, a subchannel thermalhydraulics code, and TRANSURANUS, a fuel-performance analysis code. The results for a full-core pin-by-pin burnup calculation for the ninth operating cycle of the Temelín II VVER-1000 plant, which starts from a fresh core, are presented and assessed using experimental data. A good agreement is found comparing the critical boron concentration and a set of pin-level neutron flux profiles against measurements. In addition, the calculated axial and radial power distributions match closely the values reported by the core monitoring system. To demonstrate the modeling capabilities of the three-code coupling, pin-level neutronic, thermalhydraulic and thermomechanic results are shown as well. These studies are encompassed in the final phase of the EU Horizon 2020 McSAFE project, during which the Serpent-SUBCHANFLOW-TRANSURANUS system was developed.

这项工作涉及验证将 Serpent 2 Monte Carlo 中子传输代码与子通道热工水力代码 SUBCHANFLOW 和燃料性能分析代码 TRANSURANUS 耦合的高保真多物理场系统。Temelín II VVER-1000 电厂从新堆芯开始的第九个运行周期的全堆芯逐针燃耗计算结果被呈现并使用实验数据进行评估。将临界硼浓度和一组针级中子通量分布与测量值进行比较，发现了很好的一致性。此外，计算出的轴向和径向功率分布与核心监测系统报告的值非常匹配。为了演示三码耦合、引脚级中子的建模能力，还显示了热工水力和热机械结果。这些研究包含在 EU Horizo​​n 2020 McSAFE 项目的最后阶段，在此期间开发了 Serpent-SUBCHANFLOW-TRANSURANUS 系统。