Development of methods of designing modern gas turbines

The paper is focused on the evaluation of integral and local parameters of advanced aero engine highpressure and low-pressure turbines using the method of 3D numeric simulation in ANSYS CFX. The models used were very detailed high-pressure and low-pressure turbine models with adjoined cavities and a transition duct consisting of 577 million finite elements. Numerical analysis was conducted both in stationary and nonstationary setup using BSL and SST models of turbulence. The resulted design data were verified against the turbine test results. Deviations between design and test data, both local and integral, are insignificant (local deviation is not more than 5%). The results of numerical analysis show high level of turbines’ efficiency. The current configuration was optimized based on the results of verification, which allowed increasing HPT design efficiency by 0.4%. The model was taken as a basis for a series of works aimed at improving the key parameters of both individual turbine components and the module on the whole.