DESIGN AND THERMOMECHANICAL MODELING OF THE BLADE OF AN AIR-COOLED GAS TURBINE

Abstract

The proposed investigation constitutes a contribution to the establishment of a methodology and a model that enables the identification of the thermomechanical characteristics of an air-cooled blade sector. In order to examine this issue and elucidate the factors responsible for a failure observed on a turbine, we initially undertook the three-dimensional design of blade models featuring a NASA profile with four numerical digits. Subsequently, we determined the actual operational parameters of the machine. The thermomechanical behavior of the blade sector, which experiences thermal loading under operational conditions, is assessed through the utilization of a finite element calculation code. This investigation constitutes a relatively significant contribution to the modeling of the blade in the context of finite element analysis, specifically focusing on the impact of thermomechanical effects. It enables the determination of stresses and deformations in the gas turbine blade. The evaluation of the maximum Von Mises stresses facilitates an assessment of the material's behavior. Additionally, a comparison between the Von Mises stresses from both static and thermomechanical studies allows for an examination of the maximum and minimum deformation. The results obtained from the examination of the structural features of an aluminum blade and the implementation of thermomechanical modeling showcase exceptionally encouraging outcomes. The utilized simulation protocol offers logical and coherent responses throughout the study.