International Journal of Engineering and Technology

The article contains the results of validation of the numerical computational models of the uncooled turbines of gas turbine plants created in the software suite NUMECA. The findings of the study of impact of the computational mesh dimension, account of the pre-path cavities on the design characteristics of turbines by modeling are represented in this article. As a result, there have been developed recommendations on building of the reliable computational models of the axial gas-turbine engines and the possibility of use in the optimization calculations of the turbine models without pre-path cavities without significant impact on its result has been substantiated.