METHOD FOR ANALYZING THERMAL STRESS APPLIED TO ROTOR OF TURBINE

摘要

PURPOSE: A method for analyzing thermal stress applied to a rotor of a turbine is provided to help a user make a proper operation scenario for minimizing the thermal stress applied to the rotor by precisely analyzing the thermal stress applied to the rotor during transient operation. CONSTITUTION: Rotor information is inputted(S101). An allowed rotor deformation ratio and a rotor bore limit curve are calculated based on the rotor information(S102). A steam temperature and a heat transfer coefficient are inputted(S103). Applying the steam temperature and the heat transfer coefficient according to time, the temperature of a rotor surface and the bore is calculated, and a rotor surface deformation ratio and the thermal stress applied to the rotor bore are calculated(S104).