Development of VVER-1000 pin cell thermal-hydraulic model for MCU/FlowVision coupled calculations

The thermal-hydraulic model for the coupled neutronic and thermal-hydraulic calculations based on the VVER-1000 reactor pin cell is developed. Mesh convergence study is provided with detailed description. Special attention is paid to the impact of turbulence models on the results of calculations. Good agreement with reference calculations with the use of ATLET system thermal-hydraulic code is shown.