Current State of System Thermohydraulic Codes and Trends in Their Development Abroad

摘要

The current tendencies in development of the system thermohydraulic codes for analysis of emergency processes in nuclear reactor cooling systems abroad are considered. The main trends towards improvement of physical models, numerical methods, and the code architecture and their validation are reported. Works on the techniques for evaluation of the uncertainty of the calculation results obtained using the thermohydraulic codes are listed.